show that the function f:R->R define by (f)=4x-3/5, x €r is one and onto
Answers
Answered by
3
Answer:
your answer is in attachment mark me brainliest
Attachments:
Answered by
2
Answer:
f:R→R
f(x)=4x+3
if(x
1
)=f(x
2
)
4x
1
+3=4x
2
+3
x
1
=x
2
f(x) is one-one
f(x)=4x+3
y=4x+3
y−3=4x
x=
4
y−3
put x in
f(x)
f(x)=4(
4
y−3
)+3
y−3+3=y
f(x) is onto
So ,
f(x) is invertible since the function is bijective.
f(x)=4x+3
x=4y+3
4y=x−3
y=
4
x−3
f
−1
(x)=
4
x−3
Similar questions