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Question

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zepdrix · Answer

Camilaaaaa a a a a

This is for online? :O
Are we allowed guesses?
I have an idea, but I'm not totally sure if it's right :D

anonymous · Answer

I have choices hold on

zepdrix · Answer

1/4 a choice? :D

zepdrix · Answer

oo oo ok.. let's see if this makes sense.

zepdrix · Answer

I'm thinking of it like this... in terms of differentials,
$$\large\rm y=3x^2+1$$Find instantaneous rate of change,$$\large\rm dy=6x\cdot dx$$At x=2, y has a rate of change of 3 (meaning dy=3).
Plug these values in and solve for dx, the rate of change of x.

anonymous · Answer

Yeah I get 1/4 also just don't know if its increasing or decreasing

zepdrix · Answer

If the idea of differentials is confusing, you can instead take derivative the normal way that you're used to.$$\large\rm \frac{dy}{dx}=6x$$And hten sort of uhh... "multiply" the dx to the other side.

zepdrix · Answer

It's a positive value, I would imagine it's increasing.
Hmm, thinking.

anonymous · Answer

Yeah I would assume since its positive that It would be increasing

zepdrix · Answer

Ya let's go with that \c:/ hehe

anonymous · Answer

Okay thank you!!