Subtracting Pi fractions

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October 18th 2009, 12:13 PM
l flipboi l

Subtracting Pi fractions

Hello,

My fractions skills aren't that great, I was wondering if someone could help me figure this out.

I'm trying to graph y=sin1/2(x+pi/4)

I'm stuck the the End Period...

Problem:

How do I subtract this?

(2pi) - (pi/4)

Thanks
-Mark
October 18th 2009, 12:16 PM
skeeter

Quote:

Originally Posted by l flipboi l

Hello,

My fractions skills aren't that great, I was wondering if someone could help me figure this out.

I'm trying to graph y=sin1/2(x+pi/4)

I'm stuck the the End Period...

Problem:

How do I subtract this?

(2pi) - (pi/4) common denominator ... (8pi/4) - (pi/4) = ?

what do you hope to figure out by subtracting $\frac{\pi}{4}$ from $2\pi$ ?
October 18th 2009, 12:18 PM
l flipboi l

Quote:

Originally Posted by skeeter

what do you hope to figure out by subtracting $\frac{\pi}{4}$ from $2\pi$ ?

Thanks....7pi/4, I'm hoping to find the End Period of the graph
October 18th 2009, 12:28 PM
skeeter

Quote:

Originally Posted by l flipboi l

Thanks....7pi/4, I'm hoping to find the End Period of the graph

... the period of

$y = \sin\left[\frac{1}{2}\left(x+\frac{\pi}{4}\right)\right]$

is $4\pi$ , not $2\pi$

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