Nabla: Calculus & College Math

Struggling with Calculus I, Calculus II or Differential Equations? Nabla teaches university math the way you actually learn it: one clear idea, a worked example, then practice until it sticks. Built for engineering, physics, CS and STEM students who need to pass their math courses. Every answer is checked by a computer algebra system, so the math is always right. When you miss a problem, Nabla shows exactly where it went wrong and walks you through the correct solution, step by step. LEARN IT FIRST, THEN PRACTICE • Short lessons that build intuition before formulas • Step-by-step worked solutions that explain why each step is valid • Practice problems for derivatives, integrals, limits, matrices, eigenvalues and more • "Wrong? See why": every mistake points to the exact misconception • Spaced review brings back the problems you missed, right when you are about to forget them COURSES • Calculus I: limits, continuity, derivatives, chain rule, implicit differentiation, applications of derivatives, integrals and u-substitution • Calculus II: integration by parts, trig integrals, partial fractions, improper integrals, series convergence tests, Taylor series, parametric and polar curves • Linear Algebra: vectors, matrices, row reduction, determinants, inverses, rank and basis, eigenvalues • Multivariable Calculus: partial derivatives, gradients, tangent planes, double and triple integrals, divergence and curl • Differential Equations: separable, linear and exact ODEs, second-order equations, oscillations, Laplace transforms, systems • Probability & Statistics: counting, conditional probability, Bayes' rule, normal distribution, hypothesis tests, regression • Math Foundations: algebra, fractions, exponents and functions, the refresher before calculus STUDY SMARTER FOR EXAMS • Exam Mode: timed mixed practice that rehearses the real test • Formula sheet: every formula for your course, explained, with when to use it • Home screen widget: keep the formulas you choose in front of you, rotating through the day • Streaks, XP, leagues and daily goals keep you consistent 1,854 problems, all computer-checked. From your first limit to your final exam. FREE AND PRO Start free: the opening units of every course and all of Math Foundations are free, with a worked solution on every problem. Nabla Pro is an optional subscription that unlocks every course, unlimited hearts, Exam Mode and full hints. Your progress is stored on your device and no account is needed. Math, maxed.