RXT2 Precalculus and Calculus, catalog number MATH 5350, is the two-competency-unit course in WGU's mathematics education sequence covering trigonometry, mathematical modeling, logarithmic, exponential, polynomial and rational functions, and conceptual calculus. The catalog lists it as a legacy code. Two competency units across that much material tells you what the course is: broad rather than deep, a survey that asks you to recognize behaviour across function families rather than to grind through technique.
What MATH 5350 is actually testing
The organizing idea in a precalculus survey is that each function family has a characteristic behaviour, and knowing the family tells you what to expect before you compute anything. Polynomials have end behaviour determined by degree and leading coefficient. Rational functions have asymptotes where denominators vanish and holes where factors cancel. Exponentials grow by a constant ratio rather than a constant amount, and logarithms are the inverse view of that same relationship. Trigonometric functions are periodic, and everything about amplitude, period and phase is a transformation of a base shape.
Recognizing family from behaviour, and behaviour from family, is the competency that carries the whole course. A student who has memorized separate procedures for each type is carrying six unrelated toolkits. A student who sees transformations acting on parent functions is carrying one idea applied six ways, and that student finds the assessment substantially shorter.
The conceptual calculus component is deliberately conceptual, which changes the study strategy. The scored ideas are limits as a description of approach rather than arrival, continuity as the absence of breaks, the derivative as an instantaneous rate of change and the slope of a tangent, and the integral as accumulation. Being able to explain what a derivative means for a real quantity matters more here than being able to differentiate a complicated expression quickly.
Modeling ties the two halves together. Given a situation, which function family describes it, and what do the parameters mean in context? A population growing by a fixed percentage each year is exponential and the base is the growth factor. A quantity whose rate of change is proportional to itself is the same idea seen through calculus. Assessment work rewards students who can make that translation both directions.
Planning study and any written task around the rubric
WGU keeps scoring detail inside your Course of Study rather than in the public catalog. Open it early. Each scored aspect is judged independently against a three-point scale, and a score of 2 in each aspect passes a task, with no averaging between them. In a survey course the practical use of the aspect list is coverage: it tells you which function families and which conceptual ideas you cannot skip.
Where your course is assessed by a performance assessment, the aspect list becomes an outline directly. Give each scored aspect its own heading using the rubric's own nouns, and let the worked mathematics sit under the heading it evidences rather than in a single appendix of problems.
The word budget, worked. A two-competency-unit course usually carries a smaller deliverable. Assume five scored aspects and directions calling for roughly 1,400 words of written explanation alongside any worked problems. Take 110 for a framing paragraph and 90 for a close, leaving about 1,200 across five aspects, or 240 each. Then rebalance: any aspect asking you to interpret a model in context, or to explain what a derivative or integral represents, deserves 330, funded by keeping mechanical description near 170.
Where the course is assessed by an objective assessment instead, convert the same aspect list into a study schedule. One family per session, each session ending with you writing a three-sentence description of that family's characteristic behaviour from memory, is a far better use of two competency units of study time than working fifty routine problems.
A structure that fits a function and calculus deliverable
Task directions govern format wherever they specify one. Where the arrangement is yours, this order moves from behaviour to interpretation.
| Section | What belongs in it | How it tends to be scored |
|---|---|---|
| Function family overview | The family in question, its parent function and its defining behaviour | Kept brief; behaviour matters more than definition |
| Transformations | How parameters shift, stretch, reflect and compress the parent | Scored for connecting parameter to visible effect |
| Key features | Intercepts, asymptotes, domain, range, period and end behaviour | Scored for completeness; omitted domain restrictions are a standard loss |
| Worked example | A problem solved with every step visible and justified | Scored for reasoning shown rather than answers reached |
| Modeling | A situation matched to a family, with parameters interpreted in context | The aspect where survey courses distinguish understanding from recall |
| Conceptual calculus | Limit, continuity, derivative and integral explained in meaning | Scored for explanation in words, not for computational fluency |
| Sources | Any text or dataset used, in APA | Scored wherever the rubric names citation |
Graphs earn their space in this course. A sketch with intercepts, asymptotes and end behaviour labelled communicates more about a function than a paragraph, and it is the natural evidence form for most of these aspects.
Evidence craft in a mathematics survey course
Mathematical writing is judged on whether a reader can follow the reasoning without reconstructing it, which is a higher bar than getting the answer right.
- State the domain before you work. Rational and logarithmic functions carry restrictions, and losing them is the most common quiet error in precalculus work.
- Justify each algebraic step by the property or theorem that permits it, rather than presenting a chain of expressions.
- Keep equals signs honest. Consecutive lines joined by an equals sign must actually be equal, and approximations should say so.
- Label graphs fully. Axes, scale, intercepts and asymptotes, since an unlabelled sketch evidences nothing.
- Interpret in units. A derivative of a distance function is a speed with units attached, and saying so is what turns computation into modeling.
- Cite any borrowed problem, dataset or definition in APA where the rubric asks for citation, and keep quotation minimal since WGU scans submissions for authenticity.
The habit that separates strong work in a survey course is the reasonableness check. One sentence saying what magnitude and sign you expected before computing, and whether the result matched, demonstrates the number sense this course is quietly built on.
What separates Competent from work sent back
Work at WGU is Competent or Not Competent. There are no letter grades and no ordinary grade point average, and performance assessment work can be revised and resubmitted with no grade penalty. A return therefore costs time inside a six-month flat-rate term rather than standing, and in a two-unit course that time is disproportionate to what the course is worth.
Work in this course that clears on the first read tends to show:
- Domain and range stated for every function discussed.
- Asymptotic and end behaviour described rather than only drawn.
- Transformations connected explicitly to parameters.
- At least one model interpreted in the units of the situation.
- Calculus ideas explained in meaning before any computation.
- Every step of worked mathematics visible and justified.
If your plan pairs this course with a proctored objective assessment, the boundary is absolute. Objective assessments at WGU are proctored, so support is preparation only: a study schedule, drilled function behaviour, worked practice problems and an honest readiness call. We do not sit assessments and we never ask for portal credentials.
Six mistakes that cost time in RXT2
- Treating each family as a separate subject. Transformations of parent functions unify most of the course, and missing that turns two competency units into six.
- Dropping domain restrictions. Cancelling a factor changes the function, and the hole it leaves is exactly the kind of detail assessed.
- Computing derivatives without meaning. The conceptual half asks what a rate of change represents, and a correct derivative with no interpretation answers half the question.
- Unlabelled sketches. A curve with no axes or scale cannot evidence any claim about a function's behaviour.
- Confusing exponential with polynomial growth. Constant ratio and constant difference are different mechanisms, and modeling aspects turn on telling them apart.
- Skipping the reasonableness check. A sign or magnitude error survives all the way to the answer when nothing checks it.
How support works on this course
Survey courses reward coverage and interpretation rather than technique, which makes a structured plan more valuable than more practice problems. Send the rubric from your Course of Study and the task directions if a written deliverable is involved. The work comes back with a family-by-family coverage map, worked examples with each step justified, domain and behaviour statements supplied where the draft omitted them, and modeling sections rewritten so parameters are interpreted in the units of the situation.
Two competency units against a flat-rate six-month term makes this an efficient course to close early. Clearing it also unlocks the calculus courses that follow, since the function behaviour it surveys is assumed rather than retaught in them.
Questions students ask about RXT2
Is RXT2 the same course as MATH 5350?
How much calculus does this course actually cover?
Can you sit my proctored exam for this course?
Function families feeling like six separate subjects?
Send your Course of Study rubric and any task directions. You get a coverage map, worked examples with justified steps, and modeling written so parameters carry real units.
Where RXT2 sits in WGU's programs
The July 2026 catalog places this code in 2 current WGU programs. Open a program page for the complete standard path and term positions. The live Degree Plan remains authoritative after transfer credit, substitutions, and mentor planning.
The assessments, one by one
The public catalog does not publish this course's PA/OA identity or task count. WGU Tutors publishes at most one PA manual per course and only from a WGU-controlled public rubric. Until that source exists, PA help begins from the student's real Course of Study and OA support remains preparation only.