sym2poly (Symbolic Math Toolbox)

Symbolic-to-numeric polynomial conversion

Syntax

```
c = sym2poly(s)
```

Description

sym2poly returns a row vector containing the numeric coefficients of a symbolic polynomial. The coefficients are ordered in descending powers of the polynomial's independent variable. In other words, the vector's first entry contains the coefficient of the polynomial's highest term; the second entry, the coefficient of the second highest term; and so on.

Examples

The commands

```
syms x u v;
sym2poly(x^3 - 2*x - 5)
```

return

```
1     0    -2    -5
```

while sym2poly(u^4 - 3 + 5*u^2) returns

```
1     0     5     0    -3
```

and sym2poly(sin(pi/6)*v + exp(1)*v^2) returns

```
2.7183    0.5000         0
```

See Also

poly2sym
polyval in the online MATLAB Function Reference

syms symsum