# integrationWatch

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#1
How would you integrate:
Dq/Di = Sin(i)+Cos(2i)
Asking for a friend, anything would help!
Thanks
Posted from TSR Mobile
0
4 years ago
#2
(Original post by Cpie21)
How would you integrate:
Dq/Di = Sin(i)+Cos(2i)
Asking for a friend, anything would help!
Thanks
Posted from TSR Mobile

Assuming he/she just wants to find q as a function of i, this is just a straightforward application of the rules of integration to the functions sin(i) and cos(2i)
0
#3
(Original post by davros)

Assuming he/she just wants to find q as a function of i, this is just a straightforward application of the rules of integration to the functions sin(i) and cos(2i)
He knows the basics but says he's confused as theres no values to integrate?
I'm sorry if thats not clear haha. But I think if I show him how its done he'll understand better. Thanks!

Posted from TSR Mobile
0
4 years ago
#4
We all know it's you mate stop pretending.
0
4 years ago
#5
(Original post by Cpie21)
He knows the basics but says he's confused as theres no values to integrate?
I'm sorry if thats not clear haha. But I think if I show him how its done he'll understand better. Thanks!

Posted from TSR Mobile
What does he mean by "values"?

Does he know what the integral of sin(i) is with respect to i? Can he integrate cos(2i) with respect to i? If he knows the answers to those 2 problems then the required answer is just the sum of these 2 functions.
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#6
(Original post by davros)
What does he mean by "values"?

Does he know what the integral of sin(i) is with respect to i? Can he integrate cos(2i) with respect to i? If he knows the answers to those 2 problems then the required answer is just the sum of these 2 functions.
He can write it out using cos and sin (?) Could you work it out and I'll show it him?
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#7
(Original post by alex2100x)
We all know it's you mate stop pretending.
Haha I promise its not for me. I only did AS maths and hated it..
0
4 years ago
#8
(Original post by Cpie21)
He can write it out using cos and sin (?) Could you work it out and I'll show it him?
What exactly is your "friend"'s background? If he's being taught this as part of a standard A level course then the question being asked is one of the simplest that can be set as an exercise! Or is he returning to education, or using maths as part of some other discipline?
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