Question

let f:R--R be given by f(x)=x3+3 and f(x)=28 find x​

Answer 1

Step-by-step explanation:

step by step explanations

1) x^2+3=28

x^2=25

X=+(-5)

2) pre image of 39 and 2

1)f(X)=39

x^2+3=39.

x^2=36. (x^2+3=39 then 3 transpose to anotherside heans +3 became -3 so we write it as x^y=36-3)

X=X(-6)

f(x)=2x^2+3=2

Not possible

x->∅

pleas like ❤️ and add me in brilant

and also follow me