Good Night.
Number 1.
Find the value of
Find
So you are correct
Number 2.
To find , exchange the and in
So we now have
Make the subject of the formula
Ans:A
Given f(x)= sq2x+7 and g(x)=x^2-1 , then the value of g[f(1)] is
A. 8
B.(sq7)
C. 0
D. 2
I think this one is B, but am not sure....
And the second one...
7. If the equation of a function is y=f(x)=1/2x-5 then the equation of y=f^-1(x) is
A. y = 2x + 10
B. y = 2x + 5
C. y=-1/2x +5
D. y=1/2x-10
Thanks for any help!