Video 29: Examples transforming basic sine and cosine functions

[dyagodich]

The shift up and down is due to the D (positive D moves the graph upwards, negative D shifts it down). And the right/left shift is due to the phase shift, which is affected by B and C.

[cocoabunk]

how do u kno if it shifts up down left or right?

[MissPheonix1]

how old is a student meant to be to be taught this, because im 15 and they make us do this in school ...?

[MintedCoin]

@MissPheonix1 im learning this and in 12th grade

[OneWalkingStick]

thanks a lot dyagodich. a college student over in Virginia. video was very informing, still, I'm confused about graphing a cos/sin func. when it comes to the phase shift. i know how to calculate it, but it otherwise, i get lost.

[dyagodich]

The phase shift describes where the cycle of sine or cosine begins. For instance, a sine wave normally starts at 0. If you had a phase shift of pi/2, then the cycle starts at pi/2. That is, sine will be zero at pi/2.

Try graphing sin(x-pi/2) to see what I mean.