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Exercise

$f\left(x\right)=\frac{x}{2}+\cos\:x$

Step-by-step Solution

1

Aplicamos a regra: $a+\frac{b}{c}$$=\frac{b+ac}{c}$, onde $a=\cos\left(x\right)$, $b=x$, $c=2$, $a+b/c=\frac{x}{2}+\cos\left(x\right)$ e $b/c=\frac{x}{2}$

$f\left(x\right)=\frac{x+2\cos\left(x\right)}{2}$

Final answer to the exercise

$f\left(x\right)=\frac{x+2\cos\left(x\right)}{2}$

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