Example 15:
Evaluate the integral,
1
∫
2
3
+ 6 + 11 + 6
−0.5
Factorise the denominator. Your fx-991ES can find
the roots of the denominator. Use the Equation
mode (w54).
Enter the coefficient values,
1=6=11=6==
X1 = -3 =
X2 = -1 =
X3 = -2
Write the integral with a factorised denominator,
53