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YLynn Group Title find the derivative of y=sin^-1(7x) one year ago one year ago

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1. itsmylife

$\frac{ 7 }{ 1+x^2 }$

2. itsmylife

$\frac{ d }{ dx }\sin^{-1}x=\frac{ 1 }{ 1+x^2 }$

3. itsmylife

and d/dx of 7x=7

4. YLynn

what is the derivative of arctan(x/3)

5. YLynn

do you use 1/ 1 + x^2

6. itsmylife

post your new question in a new thread thanx

7. YLynn

sorry where do I do this

8. itsmylife

close this question n post another 1