Solve the problem.
-For what values of $x$ can we replace $\cos x$ by $1 - \frac { x ^ { 2 } } { 2 }$ with an error of magnitude no greater than $4 \times 10 ^ { - 3 }$ ?
A) $- 0.356 \leq x \leq 0.356$
B) $- 0.288 \leq x \leq 0.288$
C) $- 0.557 \leq x \leq 0.557$
D) $- 0.458 \leq x \leq 0.458$

Question

Quizplus · Accepted Answer

The Answer of Solve the problem.
-For what values of $x$ can we replace $\cos x$ by $1 - \frac { x ^ { 2 } } { 2 }$ with an error of magnitude no greater than $4 \times 10 ^ { - 3 }$ ?
A) $- 0.356 \leq x \leq 0.356$
B) $- 0.288 \leq x \leq 0.288$
C) $- 0.557 \leq x \leq 0.557$
D) $- 0.458 \leq x \leq 0.458$

Solve the Problem xxx Can We Replace cos⁡x\cos xcosx By 1−x221 - \frac { x ^ { 2 } } { 2 }1−2x2​

Solve the Problem $x$ Can We Replace $\cos x$ By $1 - \frac { x ^ { 2 } } { 2 }$