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richywBest ResponseYou've already chosen the best response.0
\[\frac{dr}{dt} \left(t \hat{i} + \ln(\cos{t})\hat{j}\right)\]
 one year ago

spndshBest ResponseYou've already chosen the best response.1
dw:1349558443843:dw is this right?
 one year ago

richywBest ResponseYou've already chosen the best response.0
yup! you just differentiate each component separately.
 one year ago
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