# What's the integral of sin(x)sinh(x)?

I don't have the answer to this particular, indefinite integral, and I need to know if I've got it right. Also, I can't find it anywhere on the internet!

1/2 [sin(x)cosh(x) - cos(x)sinh(x)] + C

Thanks,

Ben

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Lord Huntroyde
42

LOL!!!
Huntroyde, you get your sig quotes from Private Eye don't you!
ZJuwelH
Huntroyde, you get your sig quotes from Private Eye don't you!

Ondeed I do, but my purchasing of P.E. Mediaballs today will mean I can change quotes more than just fortnightly.
I would know this if I knew the integral of sinhx, or what sinhx was for that matter. But I think the integral of sinx is -cosx...
Could it be -1/h cos (hx) + C?
Nevermind, mis read your question. What do you mean exactly? sin^2(x)or what?
Linda
Nevermind, mis read your question. What do you mean exactly? sin^2(x)or what?

You actually have helped a bit. I accidentally omitted the constant of integration - thanks.

Ben
Sinh(x) is a hyperbolic function and, unfortunately, is not sin(hx).

Sin(x) = 1/2i[e^(ix) - e^(-ix)] and sinh(x) = 1/2[e^(x) - e^(-x)]

Ben
Ben.S.
Sinh(x) is a hyperbolic function and, unfortunately, is not sin(hx).

Sin(x) = 1/2i[e^(ix) - e^(-ix)] and sinh(x) = 1/2[e^(x) - e^(-x)]

Ben

please tell me that's P6 (I'm only doing up to P5 this year)
king of swords
please tell me that's P6 (I'm only doing up to P5 this year)

It's complex numbers.
Oh, and it's absolute rubbish what I've written - I only bloody DIFFERENTIATED THE FLIPPING THING!!!!!

Ben
king of swords
please tell me that's P6 (I'm only doing up to P5 this year)

Better not be P6, I'm doing that!

I saw all that and thought: in the words of Snoop Dogg, "wha-wha-wha-whaaaaaaa???"
Ben.S.
It's complex numbers.
Oh, and it's absolute rubbish what I've written - I only bloody DIFFERENTIATED THE FLIPPING THING!!!!!

Ben

If you differentiated it, it wouldn't be +c, now would it?
Linda
If you differentiated it, it wouldn't be +c, now would it?

ok so he did a hybrid of integration and differentiation lol
king of swords
ok so he did a hybrid of integration and differentiation lol

Intentiation or differegration... Newton and Fermat would be turning in their graves...
i think hyperbolic functions are p5.

im only going up to p4, thank god :]
Ben.S.
Sin(x) = 1/2i[e^(ix) - e^(-ix)] and sinh(x) = 1/2[e^(x) - e^(-x)]

Ben

huh?
what is h?