Problema Solution
According to Descartes' Rule of Signs,
a) How many positive real roots does each equation below have?
b) How many negative roots does each equation below have?
Equation 1: f(a)= a^5-4a^2-7
a)?
b)?
Equation 2: f(x)= 3x^3 +9x^2 + 8x
a)?
b)?
Answer provided by our tutors
1. positive root = 1
negative root = 0
2. positive root = 0
negative root = 2