Precalculus 4: Exponentials and logarithms

Our verdict: worth it — as long as the Teaching & Academics skills on the syllabus match what you actually want to learn. The regular price for Precalculus 4: Exponentials and logarithms on Udemy is $149.99. With the coupon code on this page, that falls to $9.99 — a saving of $140.00, or 93% off the standard rate Spread across 50h of on-demand video, that works out to roughly $0.20 per hour of content — cheaper than a single chapter of most printed Teaching & Academics textbooks.

A cheap price means nothing if the material is thin — here the syllabus is organized around usable outcomes. Hania Uscka-Wehlou walks you through how to solve problems concerning exponentials or logarithms (illustrated with 239 solved problems) and why these methods work, applications of exponential and logarithmic functions in finance, engineering, and natural sciences (some of them in my videos, some as reading material), and binomial Theorem with two proofs (a combinatorial one and one by induction), Pascal's Triangle, and how to apply them — skills meant to be used, not just watched. It has already been taken by 3,326 students and holds a 4.8-star average from verified reviews, which suggests the content holds up once learners actually apply it.

Check the prerequisites before you commit: High-school mathematics, mainly arithmetic; solving simple equations (linear and quadratic) with one unknown; some (but very few) polynomial equations will be solved during the course, but you can skip them if you want to (no problem at all; it will not affect your understanding of the main subjects of the course); Precalculus 1: Basic notions (mainly the concept of function and related concepts; sets; logic). Best suited to learners who already have footing in Teaching & Academics. Plan for roughly 50h of on-demand video at your own pace. Lessons are delivered in English.