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I'm a tutoring a girl and I need this.

Name: Anonymous 2010-08-13 4:41

I'd appreciate if someone could help.

using the identity sin(a+b) = sin(a)cos(b) + cos(a)sin(b)

show -4cos(3x) + 3sin(3x) in the form Asin(3x+y)

I'm screwed.

Name: sage 2010-08-13 5:57

Learn 2 /Fourier Transform/

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I'm a tutoring a girl and I need this.

1 Name: Anonymous 2010-08-13 4:41

2 Name: sage 2010-08-13 5:57

Name: Anonymous 2010-08-13 4:41

Name: sage 2010-08-13 5:57