Question
Use Descartes's Rule of Signs to determine the possible numbers of positive and negative real zeros of the function.$$f(x)=2 x^{4}-x^{3}+6 x^{2}-x+5$$
Step 1
The function is $f(x)=2 x^{4}-x^{3}+6 x^{2}-x+5$. The coefficients of the terms are 2, -1, 6, -1, and 5. Show more…
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