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October 03, 2025, 01:42:54 am
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Author Topic: Probably a silly question about calculus, but...  (Read 555 times)  Share 

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StringFever

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Probably a silly question about calculus, but...
« on: September 12, 2009, 01:14:48 pm »
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I was wondering, in an equation such as

Differentiate (for example) sin ((pi x) / 3)

Is the pi a constant? Or not?

In other words, is my differentiated answer 1/3 sin ((pi x) /3) or pi/3 sin ((pi x)/3)?

Thanks! :)
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TrueTears

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Re: Probably a silly question about calculus, but...
« Reply #1 on: September 12, 2009, 01:16:31 pm »
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pi/3 is a constant.
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Ilovemathsmeth

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Re: Probably a silly question about calculus, but...
« Reply #2 on: September 12, 2009, 05:57:02 pm »
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Yep pi is a constant.

Don't forget that if the angle is in degrees, you need to convert the constant to radians and then bring it to the front. Eg. dy/dx of y =sin(x degrees) is not equal to dy/dx = cos x; it is equal to pi/180 cos(x degrees).
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