SOLUTION: Use the quadratic formula to determine the x-intercepts (if any) of the foloowing function. Then evaluate the function for several values of x, and use the resulting points to grap

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: Use the quadratic formula to determine the x-intercepts (if any) of the foloowing function. Then evaluate the function for several values of x, and use the resulting points to grap      Log On


   

Question 312911: Use the quadratic formula to determine the x-intercepts (if any) of the foloowing function. Then evaluate the function for several values of x, and use the resulting points to graph the function.
f(x) = 1/2x^2
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Use the quadratic formula to determine the x-intercepts (if any) of the following function. Then evaluate the function for several values of x, and use the resulting points to graph the function.
f(x) = 1/2x^2
But why would you use the quadratic formula to find the intercepts
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
in the this equation, b & c = 0
x+=+%28-0+%2B-+sqrt%28+0-4%2A.5%2A0+%29%29%2F%282%2A.5%29+
x = 0%2F1
x = 0 obviously
then
y = 0
+graph%28+200%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+.5x%5E2%29+
:
"Then evaluate the function for several values of x, and use the resulting points to graph the function.
:
x | y
-------
-2 |+2
-1 |+.5
0 | 0
+1 |+.5
+2 |+2