Solving Integrals of Problem Homework Statement

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The discussion focuses on two integral problems presented for homework help. For the first integral, suggestions include using u-substitution instead of multiplying out the expression, which could simplify the process. The second integral raises concerns about undefined values at x=0 and x=1, with a recommendation to simplify ln(x^5) to 5lnx for easier integration. Participants emphasize the importance of recognizing limits and potential issues in the second problem. Overall, both integrals require careful consideration of substitution and limits to solve effectively.
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Homework Statement


I have two problems that I am stuck on, any help would be appreciated
1. the Integral of (1+2t^8)^20 * t^7 dt
2. the Integral from 0 to 1 of dx/(x*ln(X^5))



Homework Equations





The Attempt at a Solution


for 1. I know that to something like this with a lower power you should multiply it out and then use the power rule, but am I stuck multiplying out 1+2t^8 twenty times?
for 2. Calculator gave me various errors. I suspect that the answer is zero, but I'm not sure.

Thanks to anyone who decides to post
 
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For number 1, have you tried u-substitution? Whenever you have an integral that you can't immediately figure out how to integrate, you should always try u-substitution.

For part 2, you can simplify ln(x^5) into 5lnx. Can you find the indefinite integral from here?
 
for question 2,
You've got a problem with this question which u will find out once u find the indefinite integral. x can't equal to either 1 or 0.
 
Question: A clock's minute hand has length 4 and its hour hand has length 3. What is the distance between the tips at the moment when it is increasing most rapidly?(Putnam Exam Question) Answer: Making assumption that both the hands moves at constant angular velocities, the answer is ## \sqrt{7} .## But don't you think this assumption is somewhat doubtful and wrong?

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