Cálculo Ejemplos

$1 - \frac{x^{2}}{6} < \frac{x \sin (x)}{2 - 2 \cos (x)} < 1$

Paso 1

Factoriza $2$ de $2 - 2 \cos (x)$ .

Toca para ver más pasos...

Paso 1.1

Factoriza $2$ de $2$ .

$1 - \frac{x^{2}}{6} < \frac{x \sin (x)}{2 (1) - 2 \cos (x)} < 1$

Paso 1.2

Factoriza $2$ de $- 2 \cos (x)$ .

$1 - \frac{x^{2}}{6} < \frac{x \sin (x)}{2 (1) + 2 (- \cos (x))} < 1$

Paso 1.3

Factoriza $2$ de $2 (1) + 2 (- \cos (x))$ .

$1 - \frac{x^{2}}{6} < \frac{x \sin (x)}{2 (1 - \cos (x))} < 1$

Paso 2

Multiplica cada término de la desigualdad por $2 (1 - \cos (x))$ .

$1 (2 (1 - \cos (x))) - \frac{x^{2}}{6} (2 (1 - \cos (x))) < \frac{x \sin (x)}{2 (1 - \cos (x))} (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 3

Simplifica cada término.

Toca para ver más pasos...

Paso 3.1

Multiplica $2 (1 - \cos (x))$ por $1$ .

$2 (1 - \cos (x)) - \frac{x^{2}}{6} \cdot (2 (1 - \cos (x))) < \frac{x \sin (x)}{2 (1 - \cos (x))} \cdot (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 3.2

Aplica la propiedad distributiva.

$2 \cdot 1 + 2 (- \cos (x)) - \frac{x^{2}}{6} \cdot (2 (1 - \cos (x))) < \frac{x \sin (x)}{2 (1 - \cos (x))} \cdot (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 3.3

Multiplica $2$ por $1$ .

$2 + 2 (- \cos (x)) - \frac{x^{2}}{6} \cdot (2 (1 - \cos (x))) < \frac{x \sin (x)}{2 (1 - \cos (x))} \cdot (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 3.4

Multiplica $- 1$ por $2$ .

$2 - 2 \cos (x) - \frac{x^{2}}{6} \cdot (2 (1 - \cos (x))) < \frac{x \sin (x)}{2 (1 - \cos (x))} \cdot (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 3.5

Cancela el factor común de $2$ .

Toca para ver más pasos...

Paso 3.5.1

Mueve el signo menos inicial en $- \frac{x^{2}}{6}$ al numerador.

$2 - 2 \cos (x) + \frac{- x^{2}}{6} \cdot (2 (1 - \cos (x))) < \frac{x \sin (x)}{2 (1 - \cos (x))} \cdot (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 3.5.2

Factoriza $2$ de $6$ .

$2 - 2 \cos (x) + \frac{- x^{2}}{2 (3)} \cdot (2 (1 - \cos (x))) < \frac{x \sin (x)}{2 (1 - \cos (x))} \cdot (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 3.5.3

Cancela el factor común.

$2 - 2 \cos (x) + \frac{- x^{2}}{2 \cdot 3} \cdot (2 (1 - \cos (x))) < \frac{x \sin (x)}{2 (1 - \cos (x))} \cdot (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 3.5.4

Reescribe la expresión.

$2 - 2 \cos (x) + \frac{- x^{2}}{3} \cdot (1 - \cos (x)) < \frac{x \sin (x)}{2 (1 - \cos (x))} \cdot (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 3.6

Mueve el negativo al frente de la fracción.

$2 - 2 \cos (x) - \frac{x^{2}}{3} \cdot (1 - \cos (x)) < \frac{x \sin (x)}{2 (1 - \cos (x))} \cdot (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 3.7

Aplica la propiedad distributiva.

$2 - 2 \cos (x) - \frac{x^{2}}{3} \cdot 1 - \frac{x^{2}}{3} \cdot (- \cos (x)) < \frac{x \sin (x)}{2 (1 - \cos (x))} \cdot (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 3.8

Multiplica $- 1$ por $1$ .

$2 - 2 \cos (x) - \frac{x^{2}}{3} - \frac{x^{2}}{3} \cdot (- \cos (x)) < \frac{x \sin (x)}{2 (1 - \cos (x))} \cdot (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 3.9

Multiplica $- \frac{x^{2}}{3} (- \cos (x))$ .

Toca para ver más pasos...

Paso 3.9.1

Multiplica $- 1$ por $- 1$ .

$2 - 2 \cos (x) - \frac{x^{2}}{3} + 1 (\frac{x^{2}}{3}) \cdot \cos (x) < \frac{x \sin (x)}{2 (1 - \cos (x))} \cdot (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 3.9.2

Multiplica $\frac{x^{2}}{3}$ por $1$ .

$2 - 2 \cos (x) - \frac{x^{2}}{3} + \frac{x^{2}}{3} \cdot \cos (x) < \frac{x \sin (x)}{2 (1 - \cos (x))} \cdot (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 3.9.3

Combina $\frac{x^{2}}{3}$ y $\cos (x)$ .

$2 - 2 \cos (x) - \frac{x^{2}}{3} + \frac{x^{2} \cos (x)}{3} < \frac{x \sin (x)}{2 (1 - \cos (x))} \cdot (2 (1 - \cos (x))) < 1 (2 (1 - \cos (x)))$

Paso 4

Reescribe con la propiedad conmutativa de la multiplicación.

$2 - 2 \cos (x) - \frac{x^{2}}{3} + \frac{x^{2} \cos (x)}{3} < 2 (\frac{x \sin (x)}{2 (1 - \cos (x))}) \cdot (1 - \cos (x)) < 1 (2 (1 - \cos (x)))$

Paso 5

Cancela el factor común de $2$ .

Toca para ver más pasos...

Paso 5.1

Cancela el factor común.

$2 - 2 \cos (x) - \frac{x^{2}}{3} + \frac{x^{2} \cos (x)}{3} < 2 (\frac{x \sin (x)}{2 (1 - \cos (x))}) \cdot (1 - \cos (x)) < 1 (2 (1 - \cos (x)))$

Paso 5.2

Reescribe la expresión.

$2 - 2 \cos (x) - \frac{x^{2}}{3} + \frac{x^{2} \cos (x)}{3} < \frac{x \sin (x)}{1 - \cos (x)} \cdot (1 - \cos (x)) < 1 (2 (1 - \cos (x)))$

Paso 6

Cancela el factor común de $1 - \cos (x)$ .

Toca para ver más pasos...

Paso 6.1

Cancela el factor común.

$2 - 2 \cos (x) - \frac{x^{2}}{3} + \frac{x^{2} \cos (x)}{3} < \frac{x \sin (x)}{1 - \cos (x)} \cdot (1 - \cos (x)) < 1 (2 (1 - \cos (x)))$

Paso 6.2

Reescribe la expresión.

$2 - 2 \cos (x) - \frac{x^{2}}{3} + \frac{x^{2} \cos (x)}{3} < x \sin (x) < 1 (2 (1 - \cos (x)))$

Paso 7

Multiplica $2 (1 - \cos (x))$ por $1$ .

$2 - 2 \cos (x) - \frac{x^{2}}{3} + \frac{x^{2} \cos (x)}{3} < x \sin (x) < 2 (1 - \cos (x))$

Paso 8

Aplica la propiedad distributiva.

$2 - 2 \cos (x) - \frac{x^{2}}{3} + \frac{x^{2} \cos (x)}{3} < x \sin (x) < 2 \cdot 1 + 2 (- \cos (x))$

Paso 9

Multiplica.

Toca para ver más pasos...

Paso 9.1

Multiplica $2$ por $1$ .

$2 - 2 \cos (x) - \frac{x^{2}}{3} + \frac{x^{2} \cos (x)}{3} < x \sin (x) < 2 + 2 (- \cos (x))$

Paso 9.2

Multiplica $- 1$ por $2$ .

$2 - 2 \cos (x) - \frac{x^{2}}{3} + \frac{x^{2} \cos (x)}{3} < x \sin (x) < 2 - 2 \cos (x)$

Paso 10

Convierte la desigualdad a notación de intervalo.

$(2 - 2 \cos (x) - \frac{x^{2}}{3} + \frac{x^{2} \cos (x)}{3}, 2 - 2 \cos (x))$

Paso 11