Thread: derivative of e^(cost + lnt)

Originally Posted by genlovesmusic09

y= e^(cost + lnt)

then i tired:
y= e^cost - e^lnt ---------> this is wrong

y= e^(cost + lnt) = e^(cos t) * e^(ln t)

Do you know what e^(ln t) equals to ? Then you can use the prroduct rule for derivative.