a)f(x)=x³+6
y=x³+6
Making x the subject,
X³=y-6 ;
X=³v(y-6)
f'(x)=³v(x-6) ;replace y with x.
b)f(x)=4v(9-11x)
y=4v(9-11x)
y4=9-11x
11x=y4-9
x=¹/11(y4-9)
f'(x)=¹/11(x4-9) repeat the same procedure as in (a)
Henry97 answered the question on November 10, 2017 at 20:41
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