Substitution
Maths and statistics discussion, revision, exam and homework help.
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Re: SubstitutionSee file(Original post by bahjat93)
can some one please solve the question.
Integrate xsqrt(2^x+1) dx using U=2x^2+1
Can you please show how you did it as well please -
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Re: SubstitutionI think there is an error in the question.(Original post by bahjat93)
can some one please solve the question.
Integrate xsqrt(2^x+1) dx using U=2x^2+1
Can you please show how you did it as well please -
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Re: Substitutionbut an obvious one(Original post by steve2005)
I think there is an error in the question.
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Re: Substitution(Original post by steve2005)
I think there is an error in the question.
(Original post by TenOfThem)
Since the solution has been given, I will simply say
I find it really annoying that A Level exam boards push for the use of substitution in questions that can be solved by simple inspection
The questions was wrong apparently, i mailed my teacher and he said to skip that question -_-.(Original post by mikelbird)
See file
Can you please tell me how to do this question.
Integrate xsqrt((x^2)+5) by using u=x^2+5
(You have to do it by substitution and can you please show it to me as well )
I don't know how to get rid of one of the x after you differentiate -
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Re: SubstitutionSubstitute it in to get:(Original post by bahjat93)
The questions was wrong apparently, i mailed my teacher and he said to skip that question -_-.
Can you please tell me how to do this question.
Integrate xsqrt((x^2)+5) by using u=x^2+5
(You have to do it by substitution and can you please show it to me as well )
I don't know how to get rid of one of the x after you differentiate
Integrate xsqrt(u)
Find du/dx and that should give you a clue. Remember you're trying to find it in terms of du rather than dx after substitution -
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Re: Substitutionsteveyy dude gave me the answer so it's all good(Original post by Mikeyyy!)
Substitute it in to get:
Integrate xsqrt(u)
Find du/dx and that should give you a clue. Remember you're trying to find it in terms of du rather than dx after substitution
