## 'solve' Command - Only shows one value

### Cristian (view profile)

on 18 Nov 2012

Hi,

In another pc where I test this line:

```double(solve('1=2.*sin(m)'))
```

Return values are 0.5236 and 2.6180. However, in my computer only returns the 0.5236 value. How I show the second value?

Thank you.

Cristian

### Cristian (view profile)

on 18 Nov 2012

My error. Excuse me.

```double(solve('1=2*sin(m)'))
```

Without the dot.

bym

### bym (view profile)

on 18 Nov 2012

the documentation says the string can not contain an equals sign. Here are my results (R2008b)

```solve('1-2*sin(x)')
```
```ans =
```
```       pi/6
(5*pi)/6```
Walter Roberson

### Walter Roberson (view profile)

on 18 Nov 2012

The equals sign can appear in modern MATLAB.

## Products

### bym (view profile)

on 18 Nov 2012

try this (without using string input)

```syms t
>> double(solve(1-2.*sin(t)))
```
```ans =
```
```      0.5236
2.6180```

Cristian

### Cristian (view profile)

on 18 Nov 2012

This:

```>> solve('1-2*sin(t)')
```
```ans =
```
```1/6*pi
```
Walter Roberson

### Walter Roberson (view profile)

on 18 Nov 2012

Which MATLAB version are you using?

Cristian

on 18 Nov 2012

Version 7.0

### Walter Roberson (view profile)

on 18 Nov 2012

MATLAB 7.0 used Maple for its Symbolic Mathematics Toolbox. Maple only bothers to find a single value in this situation. When Maple is asked to find AllSolutions, it says they are

```(1/6)*Pi + (2/3)*Pi*_B1 + 2*Pi*_Z1
```

The way to read this is that _B1 can be 0 or 1, and _Z1 is any integer (positive or negative). So solutions are at

```[...], -11*Pi/6, -7*Pi/6, Pi/6, 5*Pi/6, 13*Pi/6, 17*Pi/6, [...]
```

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