What is the general solution for solvefor x,2x+cosx=0 ?

The general solution for solvefor x,2x+cosx=0 is x\approx-0.45018

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solvefor x,2x+cosx=0

solve for

x, 2 x + cos (x) = 0

x \approx - 0.45018

Degrees

x = - 25.79341 \dots^{\circ}

Solution steps

2 x + cos (x) = 0

Find the interval where both equation sides share the same range:

- \frac{1}{2} \leq x \leq \frac{1}{2}

- \frac{1}{2} \leq x \leq \frac{1}{2}

Find the difference function:

2 x + cos (x)

2 x + cos (x)

Extreme points of

2 x + cos (x)

- \frac{1}{2} \leq x \leq \frac{1}{2}

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

Find the x-axis intersections

x \approx - 0.45018

y, x = y + 2

y, 3 x + y = - 2

y, - x + y = 1

4 x - 2 + 3 x + 3 = 22

y, 4 x - 3 y = 1

What is the general solution for solvefor x,2x+cosx=0 ?
The general solution for solvefor x,2x+cosx=0 is x\approx-0.45018