SOLUTION: I am trying to solve the following: Use the Intermediate Value Theorem to show that the graph of the function has a zero in the given interval. Round the zero to two decimal pl

Algebra ->  Graphs -> SOLUTION: I am trying to solve the following: Use the Intermediate Value Theorem to show that the graph of the function has a zero in the given interval. Round the zero to two decimal pl      Log On


   

Question 383978: I am trying to solve the following:
Use the Intermediate Value Theorem to show that the graph of the function has a zero in the given interval. Round the zero to two decimal places.
f(x)=2x^3 =x^2-x-5; [1,2]
Thanks so much!!
Jim
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29=2x%5E3+%2Bx%5E2-x-5
.
.
f%281%29=2%281%29%2B1-1-5
f%281%29=-3
.
.
f%282%29=2%288%29%2B4-2-5
f%282%29=13
.
.
.
Since f changes sign, it must equal zero within the interval.