## anonymous one year ago what is the first derivate of x(t)= Et^2 - Ft + G

1. anonymous

E and F and G would be constants just like numbers.

2. anonymous

split it up into derivative of each term

3. anonymous

differentiate each term individually

4. anonymous

I had Et + F + G but i was told it is wrong

5. anonymous

do you know what $\frac{d}{dt}G$ is, where G is a constant?

6. anonymous

it becomes zero right ?

7. anonymous

look, all you need to do is this: $\frac{d}{dt}Et^2-\frac{d}{dt}Ft+\frac{d}{dt}G$

8. anonymous

and yes

9. anonymous

How did you get +F from a -Ft? It would be a -F instead. Derivative of Et^2 is not Et Use power rule Derivative of $ax^n$ where a is a constant is $anx ^{n-1}$

10. anonymous

so the answer should be E 2t - F

11. anonymous

$\frac{dx}{dt} x(t)=Et^2-Ft+G=2Et-F$

12. anonymous

2ET would be better than E2t. Always good to have the number in front.