……免费查看计算步骤，用这个：https://www.symbolab.com。我还建议多刷题，Khan Academy 用来刷基础练习很棒 + 任何题量大的微积分习题集，比如《Schaum's 3,000 Solved Problems in Calculus》或者《Essential Calculus Skills Practice Workbook》。它们不一定非得是大部头的微积分教材，动手做题比硬啃上千页带彩色配图的例题管用得多。你可以找找更简练的……
…computational steps for free using: https://www.symbolab.com. I also recommend lots of practice, so khan academy is good for drilling + any problem set book with lots of calculus problems, such as "Schaum's 3,000 Solved Problems in Calculus" or "Essential Calculus Skills Practice Workbook". They don't have to be huge calculus text, doing problems is more important than reading through 1,000s pages of colorful examples. You can find shorter…
……用从别处找来的习题来补充那本教材。比如，网上很多课程主页都会放出往年的考卷/作业及答案。还有像《Schaum's 3,000 Solved Problems in Calculus》[1]、《The Humongous Book of Calculus Problems》[2]、《3,000 Solved Problems in Linear Algebra》[3] 这类书。另外，对于那些被当作教材使用、却只给授课教师提供参考答案的书……
…supplement that text with exercises taken from somewhere else. For example, lots of course websites around the 'net post previous years exams / homework with answers. There are also books like Schaum's 3,000 Solved Problems in Calculus[1], The Humongous Book of Calculus Problems[2], 3,000 Solved Problems in Linear Algebra[3], etc. Also, with books that are used as textbooks, and that provide an answer key but only to instructors...…
……免费查看计算步骤，用这个：https://www.symbolab.com。我还建议多刷题，Khan Academy 用来刷基础练习很棒 + 任何题量大的微积分习题集，比如《Schaum's 3,000 Solved Problems in Calculus》或者《Essential Calculus Skills Practice Workbook》。它们不一定非得是大部头的微积分教材，动手做题比硬啃上千页带彩色配图的例题管用得多。你可以找找更简练的……
…computational steps for free using: https://www.symbolab.com. I also recommend lots of practice, so khan academy is good for drilling + any problem set book with lots of calculus problems, such as "Schaum's 3,000 Solved Problems in Calculus" or "Essential Calculus Skills Practice Workbook". They don't have to be huge calculus text, doing problems is more important than reading through 1,000s pages of colorful examples. You can find shorter…
……用从别处找来的习题来补充那本教材。比如，网上很多课程主页都会放出往年的考卷/作业及答案。还有像《Schaum's 3,000 Solved Problems in Calculus》[1]、《The Humongous Book of Calculus Problems》[2]、《3,000 Solved Problems in Linear Algebra》[3] 这类书。另外，对于那些被当作教材使用、却只给授课教师提供参考答案的书……
…supplement that text with exercises taken from somewhere else. For example, lots of course websites around the 'net post previous years exams / homework with answers. There are also books like Schaum's 3,000 Solved Problems in Calculus[1], The Humongous Book of Calculus Problems[2], 3,000 Solved Problems in Linear Algebra[3], etc. Also, with books that are used as textbooks, and that provide an answer key but only to instructors...…