The number of real solutions of cos-1x - cos-12x - -4 is

The correct option is C 0 12≤ x≤12 ⇒cos^ 1x+cos^ 12x∈ [ π3+0,2π/3+π #160; ] ⇒cos^ 1x+cos^ 12x∈ [π3,5π3 #160; ] ⇒ no solution ...

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Condition for Coplanarity of Four Points

The number of...

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The number of real solutions of ${cos}^{- 1} x + {cos}^{- 1} 2 x = \frac{π}{4}$ is

0

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infinitely many

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{cos}^{- 1} x + {cos}^{- 1} 2 x = - π

The number of real solutions of the equation

cos(e^x) = 2^x+ 2^-xis

(a) 0 (b) 1 (c) 2 (d) infinitely many

c o s {s i n^{- 1} \frac{1}{3} + c o s^{- 1} x} = 0

{cos}^{- 1} x + {cos}^{- 1} \sqrt{1 - x^{2}} = π

{sin}^{- 1} (\infty \sum i = 1 x^{i + 1} - x \infty \sum i = 1 {(\frac{x}{2})}^{i}) = \frac{π}{2} - {cos}^{- 1} (\infty \sum i = 1 {(- \frac{x}{2})}^{i} - \infty \sum i = 1 (- x)^{i})

(- \frac{1}{2}, \frac{1}{2})

{sin}^{- 1} x

{cos}^{- 1} x

[- \frac{π}{2}, \frac{π}{2}]

[0, π]

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