# first and second differences

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• Aug 8th 2008, 06:02 AM
euclid2
first and second differences
calculate first and second differences of y=-5(x-2)squared+3
• Aug 8th 2008, 06:35 AM
CaptainBlack
Quote:

Originally Posted by euclid2
calculate first and second differences of y=-5(x-2)squared+3

Please correct this question or provide the rest of it.

RonL
• Aug 8th 2008, 06:38 AM
euclid2
The first part of the question A) ; given the following graph and the values of h and h, h=2,k=3 Determine its equations (there is a picture of a parabola with given points A(0,2); out of this i got its equation to be y=-5(x-2)squared+3

The second part(b) says to calculate the first and second differences of the equation
• Aug 8th 2008, 06:58 AM
CaptainBlack
Quote:

Originally Posted by euclid2
The first part of the question A) ; given the following graph and the values of h and h, h=2,k=3 Determine its equations (there is a picture of a parabola with given points A(0,2); out of this i got its equation to be y=-5(x-2)squared+3

The second part(b) says to calculate the first and second differences of the equation

Type it exactly as it is written please. In particular does it say diferences or derivatives or something else.

RonL
• Aug 8th 2008, 07:03 AM
euclid2

Part B:
)
11. A) Given the graph and the values of
h and k, h = 2 ; k = 3 (graph unavailable so the point given is point (0,2) determine its equation.b. calculate the first and second differences for the equation.

• Aug 8th 2008, 07:06 AM
Dubulus
y=-5(x-2)squared+3

im going to assume that by difference you mean derivative.

1st derivative: -10(x - 2) via:
d/dx of z^n = n*z^(n-1)
i used z=(x-2) and n=2
the 3 gets dropped because the slope of a constant is 0.

simplify to y' = -10x + 20
the 2nd derivative is y''=-10
via the slope of y' is always -10.

hope that helps