if y= √cosx, find dy/dx by using first principle
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(cosx)power1/ 2
dy/dx=1/2*(cosx) power1/2-1
1/2*(cosx)power -1
=1/2(cosx)
Sudhakarku0912:
it's a six mark qstn..and i think it's not a suitable answer
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hmm...i m not saying that it is wrong..i think i will get only 2 to 3 marka for this...anyway thanks for your help
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