SOLUTION: Here is another one..I am stumped as to what to do!! Help please!! I need steps to understand this. Use the intermediate value theorem to show that the polynomial function has a

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Question 970034: Here is another one..I am stumped as to what to do!! Help please!! I need steps to understand this.
Use the intermediate value theorem to show that the polynomial function has a zero in the given interval.
f(x)=x^5-x^4+5x^3-4x^2-20x+18: [1.5,1.9]
Thank you in advance!!!

Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!
: interval:[,]
if ,


if ,


Now we know:
at , the curve is zero
at , the curve is zero
And, being a polynomial, the curve will be .
So, somewhere in between, the curve cross through


zero is at and


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