Asked by Anonymous
A function f(x) = x3 + 2x - 1 has a zero within (0.1). Find the interval that the zero exists.
(A) (0.1, 0.3) (B) (0.4, 0.5) (C) (0.6, 0.7) (D) (0.7. 0.9)
(A) (0.1, 0.3) (B) (0.4, 0.5) (C) (0.6, 0.7) (D) (0.7. 0.9)
Answers
Answered by
oobleck
f(0.4) < 0
f(0.5) > 0
so, (B)
f(0.5) > 0
so, (B)
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