Question

PRE CALC.

Use Descartes Rule of Signs to describe the possible roots for the polynomial function. f(x)=8x^5-5x^3+x^2-3x+6. I do not understand Descartes Rule of Signs, and I'd like help step by step to solve this problem. I'll medal whoever helps. Thanks :D

Question

Question

PRE CALC.

Use Descartes Rule of Signs to describe the possible roots for the polynomial function. f(x)=8x^5-5x^3+x^2-3x+6. I do not understand Descartes Rule of Signs, and I'd like help step by step to solve this problem. I'll medal whoever helps. Thanks :D

welshfella · Answer

THis should help you http://www.purplemath.com/modules/drofsign.htm

loser66 · Answer

count how many times the sign change (from + to - or from - to +), like this |dw:1447873876155:dw|