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#2
Which is the numerator. Should be straightforward to integrate wrt u?
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(Original post by mqb2766)
e^2x = (u-1)^2
Which is the numerator. Should be straightforward to integrate wrt u?
e^2x = (u-1)^2
Which is the numerator. Should be straightforward to integrate wrt u?
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#5
The working is a bit wrong (cubic?), but the previous answer is right, so maybe a typo.
It's a quadratic numerator after cancelling by e^x.
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(Original post by mqb2766)
The working is a bit wrong (cubic?), but the previous answer is right, so maybe a typo.
It's a quadratic numerator after cancelling by e^x.
The working is a bit wrong (cubic?), but the previous answer is right, so maybe a typo.
It's a quadratic numerator after cancelling by e^x.
e^3x is (u-1)^2
So I made everything in terms of u ,
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#7
(Original post by AllGrade999999)
I’m confused, so I was right?
e^3x is (u-1)^2
So I made everything in terms of u ,
I’m confused, so I was right?
e^3x is (u-1)^2
So I made everything in terms of u ,
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(Original post by mqb2766)
No. Why do you think that?
No. Why do you think that?
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#9
(Original post by AllGrade999999)
I mean (u-1)^3*
I mean (u-1)^3*
Last edited by mqb2766; 1 month ago
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(Original post by mqb2766)
Yes. It was slightly easier co cancel e^x first, then do the quadratic substitution.
Yes. It was slightly easier co cancel e^x first, then do the quadratic substitution.
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#11
(Original post by AllGrade999999)
u(u-1)^4 / u (u-1) ?
u(u-1)^4 / u (u-1) ?
Just continue #3.
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(Original post by mqb2766)
I have no idea where you're going with this. You seem to be doing random algebra.
Just continue #3.
I have no idea where you're going with this. You seem to be doing random algebra.
Just continue #3.
What quadratic??🤣
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#14
If not, describe what the problem is, I'm thoroughly confused what you're trying to do.
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(Original post by mqb2766)
You must have understood how you got to post 3? Then simply integrate.
If not, describe what the problem is, I'm thoroughly confused what you're trying to do.
You must have understood how you got to post 3? Then simply integrate.
If not, describe what the problem is, I'm thoroughly confused what you're trying to do.
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(Original post by mqb2766)
You must have understood how you got to post 3? Then simply integrate.
If not, describe what the problem is, I'm thoroughly confused what you're trying to do.
You must have understood how you got to post 3? Then simply integrate.
If not, describe what the problem is, I'm thoroughly confused what you're trying to do.
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#17
(Original post by AllGrade999999)
Oh my goodness, hold on pls
Oh my goodness, hold on pls
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(Original post by mqb2766)
Can hardly wait ...
Can hardly wait ...
I got {integral} 1/u + (u-1)^3 / (u-1) du
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(Original post by mqb2766)
You really need to upload your working.
You really need to upload your working.
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