Simple Integration Watch

mikeylaw54
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#1
Report Thread starter 7 years ago
#1
Hi all,

For some reason i just cant figure this one out

integrate: 1 / sqrt(x)

I understand that this becomes x^(-1/2)

I would have thought you would then add 1 to the power so it become 3/2 and then divide by that to give

3x^(3/2) / 2

i know the correct answer is 2x^(1/2) so would really appreciate if someone could just point out my error.


Cheers in advance
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eliotball
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Report 7 years ago
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You multiplied instead of dividing and added two to the power instead of adding 1.

-1/2 + 1 = 1/2 not 3/2
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dknt
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#3
Report 7 years ago
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(Original post by mikeylaw54)
Hi all,

For some reason i just cant figure this one out

integrate: 1 / sqrt(x)

I understand that this becomes x^(-1/2)

I would have thought you would then add 1 to the power so it become 3/2 and then divide by that to give

3x^(3/2) / 2

i know the correct answer is 2x^(1/2) so would really appreciate if someone could just point out my error.


Cheers in advance
- \dfrac{1}{2} + 1 = \dfrac{3}{2} ?

Check that minus sign
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mikeylaw54
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#4
Report Thread starter 7 years ago
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Think I need some decent sleep!

Thanks guys
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