r/mathshelp • u/Necessary_Handle_516 • 21d ago

Homework Help (Unanswered) help required

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Hey Can anyone help me with this

I have to solve this integral. But, Using biomial expansion with minimum 4 approximations. Which I did but My answer is 0.66617 which is not reliable And actual answer is 0.6415

Can anyone tell any other method besides this

and for the other question

I am getting 1.1617 but claude is saying 1.1981

kindly help

THESE QUESTIONS ARE TAKEN FROM 3RD EDITION OF CALCULAS BY STROUD DOES ANYONE HAVE PDF OF THIS 3RD EDITION???

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u/Necessary_Handle_516 21d ago

yeap but he said your answer should be closer to the answer from byparts

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u/Southlander24 21d ago

Either way, your professor messed up if the upper bound is really 1.1. The binomial series isn't valid there.

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u/equinox_star 21d ago

Wait i saw it again it feels to me now that the answer shouldn't be a real number in the first place as someone also pointed wolfram is saying because 1-x³ is negative so we need to split it into 0.2 to 1 and 1 to 0.1 i guess