## anonymous one year ago ...

1. zepdrix

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

2. anonymous

I have choices hold on

3. zepdrix

1/4 a choice? :D

4. zepdrix

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

5. zepdrix

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.

6. anonymous

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

7. zepdrix

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.

8. zepdrix

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

9. anonymous

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

10. zepdrix

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

11. anonymous

Okay thank you!!