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Mathematics 8 Online
OpenStudy (anonymous):

calc

OpenStudy (amistre64):

this is the same concept we just did :)

OpenStudy (sidsiddhartha):

use chain rule :)

OpenStudy (sidsiddhartha):

so u know chain rule?

OpenStudy (sidsiddhartha):

\[\frac{ d }{ dx }[f[g(x)]]=f'(x)*\frac{ d }{ dx }g(x)=f'(x).g'(x)\]

OpenStudy (amistre64):

\[\frac{dy}{dx}=\frac{dy}{d[x^2+e^{3x}]}*\frac{d[x^2+e^{3x}]}{dx}\]

OpenStudy (sidsiddhartha):

ok \[f(x)=\ln(x^2+e^{3x})\\f'(x)=\frac{ d }{ dx }\ln(x^2+e^{3x})=\frac{ 1 }{ x^2+e^{3x} }*\frac{ d }{ dx }(x^2+e^{3x})\] ok so far?

OpenStudy (sidsiddhartha):

\[\frac{ d }{ dx }\ln(x)=1/x\] used this

OpenStudy (sidsiddhartha):

now just complete the rest \[f'(x)=\frac{ 1 }{ x^2+e^{3x} }[\frac{ d }{ dx }(x^2)+\frac{ d }{ dx }(e^{3x})]=\frac{ 1 }{ x^2+e^{3x} }[2x+3e^{3x}]\]

OpenStudy (sidsiddhartha):

\[\frac{ d }{ dx }e^{ax}=ae^{ax}\] used this

OpenStudy (sidsiddhartha):

got it?

OpenStudy (sidsiddhartha):

no its complete lol :)

OpenStudy (sidsiddhartha):

yw!!

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