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  • Find the range of Option: 1 <img alt="\left [ 4,\infty \right ]" src="/late

Find the range of y=-3x^{2}+4

Option: 1

\left [ 4,\infty \right ]

 

 


Option: 2

\left [ 3,\infty \right ]


Option: 3

\left [-\infty,4 \right ]


Option: 4

None of these


Answers (1)

We can find the range using simple manipulations as x^{2}\geq 0 (for any x)

Multiplying both side by -3

-3x^{2}\leq 0

Adding 4 to both sides

-3x^{2}+4\leq 4

y\leq 4

So,range is \left [ 4,\infty \right )

Posted by

Kshitij

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