f(x)=/x-2/ and g(x)=f(f(x)) then for x 20, then g(x)= - Maths - Sets Relations and Functions

Question

f(x)=/x-2/ and g(x)=f(f(x)) then for x>20, then g(x)=?

Rahul Raj · Accepted Answer

Dear student

Assuming f(x)=x-2g(x)=ffx=fx-2=x-2-2so, g(x) = x-2-2For x > 20x-2>0so x-2=x-2gx = x-2-2=x-2-2=x-4also for x>20x>4So,  x-4>0so x-4=x-4so gx=x-4

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