Mathematics: If f(x) = 5x, what is f–1(x)? a. f–1(x) = –5x b. f-1(x)=-1/5x c. f-1(x)=1/5x d. f–1(x) = 5x

(i) f(-3) = (-3)^2+2(-3)+1So9-6+1=10-6=4(ii)f(5)= (5)^2+2(5)+1so25+10+1=36(iii) Please check this question if it s correct or not...

If f(x) = 5x, what is f–1(x)? a. f–1(x) = –5x

happy121906

30.05.2020

To get the inverse of a function interchange
the x's with the y'x and solve for y, as follows:
y=5x-7

Interchange to get:
x=5y-7
Solve for y to get:
y=(1/5)x+(7/5)

so I think it might be c

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LanBon02

01.08.2020

(i) f(-3) = (-3)^2+2(-3)+1

9-6+1=10-6=4

(ii)f(5)= (5)^2+2(5)+1

25+10+1=36

(iii) Please check this question if it's correct or not

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