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spndsh
 2 years ago
d/dt (a(tsint)ihat + a(1cost)jhat)
spndsh
 2 years ago
d/dt (a(tsint)ihat + a(1cost)jhat)

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Ahaanomegas
 2 years ago
Best ResponseYou've already chosen the best response.1You need to differentiate each component of the original vector to get the components of the differentiated vector.

spndsh
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1349560630436:dw is this right?

Ahaanomegas
 2 years ago
Best ResponseYou've already chosen the best response.1No. 1. You forgot to multiply by the constant a. 2. The derivative of sin is cos, not cos. Try again! :)

Ahaanomegas
 2 years ago
Best ResponseYou've already chosen the best response.1Nope. Again: 1. You need to write it as a vector. 2. You forgot the a on the ycomponent (jhat). Try again! Don't get discouraged. This takes time to fully understand. ;)

Ahaanomegas
 2 years ago
Best ResponseYou've already chosen the best response.1Try writing it as (at  a sin t, a  a cos t). It makes it easier for me. Try that for yourself!

spndsh
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1349561042586:dw what about this?

Ahaanomegas
 2 years ago
Best ResponseYou've already chosen the best response.1There you go! Good job. :)

Ahaanomegas
 2 years ago
Best ResponseYou've already chosen the best response.1No problem! Do you see the general method of this so that you can do similar problems in the future?

Ahaanomegas
 2 years ago
Best ResponseYou've already chosen the best response.1By the way, you're a good learner, @spndsh (!!!)
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