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# C3 Maths Functions Question

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1. Hi All,
This will be my last post of the day regarding these pesky functions questions,
Basically I'm struggling to find the range of the function in the question (3b)
I've worked out the function fg(X) is 2x^2 + 7, but how do I find the range of this?
Thanks,
James

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2. (Original post by james0902)
Hi All,
This will be my last post of the day regarding these pesky functions questions,
Basically I'm struggling to find the range of the function in the question (3b)
I've worked out the function fg(X) is 2x^2 + 7, but how do I find the range of this?
Thanks,
James

Posted from TSR Mobile
What's the biggest that can be? What's the smallest?

Hint : is always .
3. (Original post by notnek)
What's the biggest that can be? What's the smallest?

Hint : is always .
So would the range just be 'greater than or equal to 7' ?

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4. (Original post by james0902)
So would the range just be 'greater than or equal to 7' ?

Posted from TSR Mobile
Yes.

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