Writing Equations for Trig Graphs

[dorflumkin]

videos like these are timeless and eternally helpful. thank you!

[johndemartin]

Couldn’t agree more with several commenters: I’ve been teaching myself precalc and looking for days for the “perfect” video to explain fully/clearly how to model a periodic context using sin and cos functions (especially how to find the phase shift/“c” value). This video is awesome!

[melissamauricio]

Thank the lord I understand now!!!! I have been searching all day for someone to clearly explain how to solve for the period. Let just say you're the reason I an receiving a 100 on my Hw ^-^

[reyanshbudhdev]

Thks a lot Mr.D Klinkerman I was depressed that I couldn't understand this but, thanks for saving me from my upcoming assessment!!💯

[gamersakolively]

Thanks for helping me learn trigonomic functions! I am trying to learn them in 4 days so this was a big help.

[nwhummingbird]

Thank you, thank you, thank you. The best explanation and simplest to understand.

[priyasandhu]

Thanks a lot my teacher just said what the value for c was and never properly explained how you got it and I was liked that you touched on questions in which they could u ask if they would like the amplitude as negative or positive

[hayleymcmillon]

Thank you so much for an easy to understand video! This has improved my understanding so much!!

[roxanayazdani]

honestly God Bless your soul, you saved my mark. Thank you so so so so so so so much!

[AM-hlej]

Thank you so much very useful information

[kheir-eddineferhat]

Thank you a lot, you've just saved me.

[anvithabheemidi]

i dont get how you can be sure tho 17:00 because i can also start at the maximum value near the y-axis

[gabrielcodina]

For the second last function, wouldn't c be distorted by b. If so how would you find c then

[Y-shirts]

isnt it x-2pi/3 on the last question for cos function

[alpacinoismydad]

you sound like channing tatum in 21 jump street. hence, great video sir

[cassied]

So can we always express/name the same graph in terms of either cosine or sine (obviously excluding other function graphs like tan. / cot)? Or is there some specific way we tell a sine graph from a cosine graph??

[francesmejia]

how did he know pie over four was the break down for the x axis?

[africanherbsman]

At 16:50, aren't the minimum and maximum values equidistant from each other? Since they are equidistant, couldn't you pick the point (2Pi/3, -1) for writing the cosine equation instead of (-2Pi/3, -4)?

[sydneys]

thank u i am very dumb but now i feel very smart

[cnimi]

Beautiful explanation, useless to understand how you CALCULATE c because first example is an easy particular case when b=1, second example = special case c=0 therefore USELESS