Hi, Ive just been learning how to do some derivatives and have become stuck on a question because i think I dont understand some algebra.
ok question is finding the derivative
the answers say -1/(2u)(SQRTu)
I know that 1/SQRT(u) = SQRT(u)^-1 but to get u on its own would it then become u^-1.5? or u^-0.5? And I'm wondering is the answer a typo? I thought I knew the power rule and cant see how that answer can e right. I know this is calc now but Im posting here as Im missing some simple algebra/arithmetic