Quote:

---

Coaster said:
math is key to having a good head on ur shoulders
if u can master math then u can master anything

---

average rate of change for 3-x^2 from x=-1 to x=3

I tried just evaluating them both at x=-1 and x=3 I dont think that is right

when x=-1 the resulting answer is 2
when x=3 the answer is -6

The answer on the answer key is rate of change of -2

Thanks again, I will try to figure out the rest on my own or save them until another day

Quote:

---

Coaster said:
f(x)=-x^2+3
f'(x)=-2x
f'(-1)=2
f'(3)=-6
(f'(-1)+f'(3))/2=-4/2=-2

---

Quote:

---

Coaster said:
take the derivative

---

uhh the what?

im going to have to study my ass off to get the B I want

Quote:

---

Hefe said:
2+(-6)=(-4)/2=2?

---