suppose that the functions Q and R are defined as follows q(x)=x^2+7 and r(x)=sqrt x+8 find the following. (q*r)(1)=? (r*q)(1)=?

Question

isaiah.feynman · Answer

Find what?

anonymous · Answer

this was everything the problem said, I am so completely confused with these functions

isaiah.feynman · Answer

First you must understand notations. I tried showing them last time.

isaiah.feynman · Answer

First what does (q*r)(x) mean? it means multiply q(x) and r(x) together. Finally (q*r)(1) means evaluate q times r at 1.

anonymous · Answer

okay

anonymous · Answer

so do I say (x^2+7*sqrt x+8)(1)?

isaiah.feynman · Answer

Yes. But 1 is not needed right now.

anonymous · Answer

okay and switch it around for (r*q)?

isaiah.feynman · Answer

We will deal with it soon. Just multiply r and q now and show me your answer.

anonymous · Answer

I can guess the answer but Im going to be honest, I have no idea

anonymous · Answer

rq(x)=sqrt x+8

anonymous · Answer

70 and 16?

isaiah.feynman · Answer

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