Graph sinusoidal functions: phase shift (practice) | Khan Academy

Phase shifts can be tough! Use your period formula (T = 2pi / b ) and think about what point was the "original" y-intercept. Feel free to try this with desmos.

[peter_c_]

Got to this quiz on Khan Academy and was confused AF. I hadn't even heard the term phase shift before, and there were no KA videos explaining what to do for these types of problems. Thanks so much for this lesson-it was an absolute lifesaver for me lol.

[NoahWright-vf]

Thanks, man, this was driving me crazy.

[whatsittoya]

Thank you for this! It’s as if the videos for this were not made. Glad I can now fill in the gaps.

[legendbreaker]

Bro is taking care of childrena dn teaching math at the same time, he is a G, I could not handle that. Thank you for the sacrifice of your time. Keep doing what you are doing

[saihaasini]

Hello, I'd been struggling with this concept for more than a month. There were no videos relating to interpreting the trigonometric function from its graph in Khan academy or Youtube. Finally, I found your video, and it was a big sigh of relief. Thanks a lot for this video, you deserve much more!

[AudieOnion-onit]

Thank you soo much!! This literally explains exactly what I needed to know without being confusing!

[ratnagoka]

thank you this helped a lot for my freshman hs prep...appreciate this !

[kaylasvegas]

thank you! I hope you have more examples! I was so engrossed in your explanation I didn't notice when your child left! Respect!

[Amazoninspiration]

3:15 That is the point that I struggle the most.

[cheeseboi]

1:04 kid phases out of existance!!! epic tutorial!!!

[karenalvarez]

Is there another way to get the midline without looking at the graph ?






Your video is very helpful! I was struggling with this for two days!

[tkhue]

The altitude of the International Space Station t minutes after its perigee (closest point), in kilometers, is given by
A(t) = -sin[ (2pi (t + 23.2) ) / 92.8 ] + 415

​

The International Space Station reaches its perigee once in every orbit.
How long does the International Space Station take to orbit the earth? Give an exact answer.

I find this is more challenging from the same exercise section .

[deniindustriez]

why is it -3.5 but not +3.5? That's the only thing I don't understand and so can't move on. In my understanding, if the graph is moved in the right side then it means it moved in the positive direction so it's +3.5 but not -3.5. I know it's wrong, but just can't understand why. Please somebody explain, I will be very grateful.

[AmitBarGil]

Can you do the same video without the child?

[chriso.wilkie]

Very useful information. Almost could have been perfect without the baby noises