Calculus vs 悦学云

Calculus you can see is calculus you can learn. Calculus: Learn & Practice turns a full first-year calculus course into one clear path: build intuition with an interactive animation, follow a worked example step by step, then prove to yourself you've got it with instantly graded practice. WHAT'S INSIDE • 108 interactive concept animations — play, scrub and watch the key change happen instead of imagining it • 327 worked examples with complete solutions, visual hints and the mistakes students usually make • 1,215 practice problems graded the moment you submit, each with a full solution • Math-history stories with the original problems: Zeno's paradoxes, Archimedes' π, Fermat and Descartes' fight over tangents • Mistake tracking and mastery per concept, so you know exactly what to review • Spaced review that brings a topic back right before you'd forget it • Study Desk: a 2-minute micro-experiment every day, a Lab Notebook for your own conjectures, and a library of 219 counterexamples • A searchable library of 12 chapters, filterable by topic, tag and difficulty TOPICS COVERED • Limits and continuity • Derivatives and differentials • Applications of derivatives — optimization, related rates, MVT, curve sketching, L'Hôpital's rule, Taylor polynomials • Integrals — FTC, substitution, integration by parts, partial fractions, improper integrals • Applications of integration — area, volume, arc length, work • Differential equations • Infinite series — convergence tests, power series, Taylor and Fourier series • Multivariable differential calculus — partial derivatives, gradient, tangent planes, Lagrange multipliers • Vectors and 3D analytic geometry • Multiple integrals — double and triple integrals, cylindrical and spherical coordinates • Line and surface integrals — Green's, divergence and Stokes' theorems Great for Calculus I, II and III, AP Calculus AB/BC review, and exam prep. TRY IT FIRST Chapter 1 is completely free — animations, examples and practice all work, no time limit and no account. To unlock every chapter, choose Calculus Pro: a monthly or yearly auto-renewable subscription (the yearly plan may include a free trial for eligible users), or a one-time lifetime purchase. No ads. Works on iPhone, iPad and Mac. SUBSCRIPTION DETAILS Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in Settings > Apple Account > Subscriptions. Prices are shown in the app before you buy. Your progress stays on your device. Purchases are handled securely by Apple and can be restored anytime. Every lesson, example and problem is available in English, Spanish, French, German, Italian, Portuguese, Japanese, Korean, Arabic, Hindi and Chinese. Privacy: https://vaca.vip/advancedmathematics/en/privacy Support: https://vaca.vip/advancedmathematics/en/support Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

悦学云 - 品味唐诗宋词，传承非遗之美 悦学云是一款免费的古典文化与诗词、非遗学习工具。无需注册、无广告、无追踪，专注为你提供纯净的阅读体验。所有内容均在本地呈现，让你随时随地沉浸于唐宋诗词与非物质文化遗产的魅力之中。 1. 海量诗词库，经典注解 - 收录数千首唐诗宋词经典作品，涵盖李白、杜甫、苏轼、李清照等名家名篇。 - 每首诗词均配有重点注释和译文、零基础也能轻松理解。 - 诗词支持语音朗读功能，生僻字也能知道发音。 2. 非遗宝库，匠心传承 - 收录传统技艺、民俗节庆、戏曲曲艺、民间美术等各类非遗项目。 - 每项非遗均配有背景介绍与文化解读，带您领略华夏文明的活态记忆。 3. 智能分类，快速发现 - 按朝代、作者、题材（山水、边塞、咏物、节日等）智能分类。 - 轻松查找你喜欢的诗人或特定主题、非遗资料，探索国学之美。 4. 每日推荐，诗意不重样 - 开屏精选诗词和非遗内容 - 利用碎片时间，日积月累提升文学素养，感受传统文化之美。 5. 收藏与阅读记录 - 遇到喜欢的诗词或非遗内容，一键收藏，随时重温。 - 自动保存最近阅读的 50 条记录，方便继续上一次的诗意旅程。 6. 舒适阅读体验 - 支持字体大小调节、浅色/深色主题，保护视力。 - 简洁无干扰的排版，聚焦文字本身。 7. 隐私安全 - 不收集任何个人敏感信息。 - 所有个人数据（收藏、历史、偏好）仅储存在你的设备本地，卸载应用即自动清除。 * 本应用无收费内容 - 使用事项： 1. 使用条款: https://www.yuexueyun.cn/app/terms.html 2. 隐私协议: https://www.yuexueyun.cn/app/privacy.html 3. 服务支持：https://www.yuexueyun.cn/app/support.html