Go To Your Study Dashboard

Get Answers to all your Questions

header-bg

Let f be a function defined by f:x 5x^2+2,x belongs to R. 1-Find the image of 3 under f. 2-find f(3) x f(2) 3-Find x such that f(x)=22.

Answers (1)

best_answer

Given f(x)= $5x^2+2,xvarepsilon R$

f(3)= $5(3)^2+2=5 imes 9+2=47$
f(2)= $5(2)^2+2=5 imes 4+2=22$

$herefore f(3) imes f(2)=47 imes 22=1034$

3. f(x)=22

$5x^2+2=22$

$5x^2=20$

$x^2=4$

$x=2,-2$

Posted by

Deependra Verma

View full answer

Similar Questions

4 newly wedded couples are dancing at a function , if the partner is selected at random , then the chance that no husband is dancing with his own wife is
______ and ______ tags break the line flow.
______ are used to connect web pages. They are created with tag.

Latest Question