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[BlackSalad]

I've tried it by hand and w/ maple but it still doesn't seem to be the correct answer, please help!!



by hand I got:



Maple 10 got...



Neither are correct >_<

 

[Lord Error]

Haha, I have a feeling the answer is something like 3x^2, and both you and Maple somehow screwed up, and got those humongous results.

 

[MrPing1000]

this thread scares me

 

[Deku Tree]

Plug in the formula for cos x in terms of exponentials.

e^ix = cos x + i sin x

e^(-ix)=cos x - i sin x

so that

2cos x = e^ix + e^(-ix)

Then it should be easy...

 

[Mihail]

I don't understand of what the cosine is being taken. What is that symbol? If it's theta... is theta just a constant? And if it's its own variable, the question doesn't really make sense.

 

[BlackSalad]

Plug in the formula for cos x in terms of exponentials.

e^ix = cos x + i sin x

e^(-ix)=cos x - i sin x

so that

2cos x = e^ix + e^(-ix)

Then it should be easy...

sort of what I did... I used an integral I found in the back of a textbook. Otherwise I'm stumped.

 

[Wellington]

Holy god am I glad I am done with school. :lol :lol :lol

I've forgotten how to do these. I have failed you.

 

[Mihail]

I can help you if you answer my question above... and if I don't have to leave soon.

 

[BlackSalad]

omega is part of the integral, as its being multiplied by (t-3) but I FINALLY got it Maple can go suck a nut, my answer was pretty much right, it was just a simple mistake because of my poor handwriting :lol