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OpenStudy (anonymous):
Use the intermediate value to show that the polynomial function has a zero in the given interval. f(x)=4^3+5x^2-9x+5;[-8,-1] Find the value of f(-8)
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ganeshie8 (ganeshie8):
find f(-8) and f(-1)
ganeshie8 (ganeshie8):
if you get opposite signs, then the function crosses x axis, thus having a zero in between the given interval
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