2 problems solving

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I would like you to solve those two problems. open this pdf book –> http://phy240.ahepl.org/ModPhy-Serway.pdf

Go to the end of chapter 12 . page 461, 462 of the book ” pages 478, 479 in the pdf file ”

Questions 23, and 25. Both problems need graphs. you need to solve them mathematically. Then, you need to plot what is asking you for.

No plagiarism please just provide a great answer and explanation.