New boots and new lingerie day (and new satin playsuit day, but as you can see, I have taken it off here π ) πΈ whatcha think? Need licking? π I am having an UTTER CRISIS having hit a brick wall with derivatives. All was going fine and well until (eerily fine and well!) but for some reason Iβm just not getting this answer right! π₯² Iβve lost a day to this dang thing! For anyone interested and/or good at calculus, I need to differentiate this: p(t) = te^t sin t Sounds dandy right? Use the product rule, okayβ¦ I keep getting the wrong answers?! The answer is supposed to be: e^t (t cos t + t sin t + sin t) But I most definitely am not getting that answer. Am I being a silly tired goose? π I come with the aforegiven pussy pic in lure of step-by-step aidβ¦ π