Author Topic: a wierd question (Read 735 times) Tweet Share

Inside Out · « **on:** May 15, 2011, 08:56:35 pm »

8. Find the approx. value of cos((pie/4)+h)) where h is small

brightsky · « **Reply #1 on:** May 15, 2011, 09:18:11 pm »

Remember hf'(x) + f(x) approx= f(x+h), where h is small.
So cos(pi/4 + h)) approx = -hsin(pi/4) + cos(pi/4) = sqrt(2)/2 -sqrt(2)/2 * h

Inside Out · « **Reply #2 on:** May 15, 2011, 09:19:10 pm »

is there a way to use the leibenz rule

brightsky · « **Reply #3 on:** May 15, 2011, 09:20:10 pm »

is there a way to use the leibenz rule

what's the leibnez rule?

Inside Out · « **Reply #4 on:** May 15, 2011, 09:22:30 pm »

i mean leibniz notation: change iny= dy/dx times change in change in x

Inside Out · « **Reply #5 on:** May 15, 2011, 09:23:57 pm »

oh wait!!! ahaha its change in y not new thats y i got mixzed up ig ot it.. thanks!!

pi · « **Reply #6 on:** May 16, 2011, 08:22:55 pm »

is there a way to use the leibenz rule

I don't think thats allowed in Methods btw :S

Search the forums now!