15 questions linked to/from Can Reduce *really* not solve for x here?
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### Why doesn't Mathematica solve $x=\cos\,x$ properly? [duplicate]

Why doesn't Mathematica solve x == Cos[x] properly? Both Solve and NSolve fail with the ...
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### How do I solve for the roots of $\sin(x) - x^2=0$? [duplicate]

I have defined h[x] := Sin[x] - x^2. When I submit Solve[h[x] == 0, x], Mathematica tells me Solve::nsmet: This system ...
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### Why Wolfram|Alpha can solve an equation but not Mathematica? [duplicate]

I want to numerically solve $$\cosh\left(\frac{1}{x}\right)-\frac{1}{x^2}\sinh\left(\frac{1}{x}\right)=0.$$ A strange thing is that Wolfram|Alpha it solves it perfectly, but Mathematica I have this: ...
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### Solve $1/a - \sin(1/a)$ [duplicate]

I need to find $a$ from this equation: Solve[(2*b)/a - 1/(n*π)*Sin[(2*n*π*b)/a] - 1/2 == 0, a] but I get the response: Solve::nsmet: This system cannot be ...
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### Why can't Mathematica solve this equation? [duplicate]

Possible Duplicate: Can Reduce *really* not solve for x here? Why can't Mathematica solve this equation? ...
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### Problem with solving an equation [duplicate]

I dont understand why Mathematica cannot solve this equation: Solve[Log[x^2 + 5] + 0.5 x + 1 == 0, x] I get this error message: Solve::inex: Solve was unable to solve the system with inexact ...
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### Closed solutions for FindRoot, no solutions for Reduce or Solve [duplicate]

Reduce, Solve and FindRoot all appear to struggle with this: ...
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### How do I work with Root objects?

I want to solve the trigonometric equation : $$(3-\cos 4x )\cdot (\sin x - \cos x ) = 2.$$ I tried Solve[(3 - Cos[4*x])*(Sin[x] - Cos[x]) == 2, x] It returns the ...
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### Interlacing a single number into a long list

This seems like it should be a simple question, but I am running into some difficulty in doing this with Mathematica. Right now, I have a list like this: ...
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### Solving simple transcendental equation [duplicate]

I would like to solve Tan[x] == 1/x Solve[] does not work, suggesting that there is no nice analytical solution for x. Surprisingly, NSolve[] does not work ...
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### How to obtain all solutions for Cos[x] Cosh[x] == 1?

Both analytical solutions or all numerical solutions are good enough. FindRoot may be a possible solution, any better solution? ...