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If f(x)= 3|x| . Then the range of f(x) is

Option: 1

[0,\infty)


Option: 2

[3,\infty)


Option: 3

R


Option: 4

[1,\infty)


Answers (1)

best_answer

We can find range of |x| by simple manipulation

As 0 ≤ |x| < ∞

Multiplying all 3 sides by 3

0 ≤ 3|x| < ∞

So, range is the same i.e [0,\infty)

Posted by

Riya

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