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This group contains content from Introduction to Precalculus 2e by OpenStax. Included are scores of spaced-repetition flashcards linked to specific relevant locations in the textbook. We call these unique flashcards "Recalls."
We recommend that you read this fantastic free book to learn precalculus and then use iDoRecall's flashcards to remember what you've learned. When you practice memory retrieval, if you struggle to recall the answer, click the source link and the textbook will open at the precise relevant location so that you can refresh your memory in the context where you learned it. We invite you to join our dedicated Precalculus Facebook group.
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This book is licensed by OpenStax under the Creative Commons CC-BY 4.0 license. iDoRecall is not affiliated with nor endorsed by OpenStax or Rice University and has no rights or interests in the OpenStax name. Access the book for free at: https://openstax.org.