Calculus Examples

$f (x) = \cos (x) - 4$

Step 1

Set $\cos (x) - 4$ equal to $0$ .

$\cos (x) - 4 = 0$

Step 2

Solve for $x$ .

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Step 2.1

Add $4$ to both sides of the equation.

$\cos (x) = 4$

Step 2.2

The range of cosine is $- 1 \leq y \leq 1$ . Since $4$ does not fall in this range, there is no solution.

No solution