Input:

Result:
$$$$

### Description

- On this page, you can expand, factor, and simplify polynomials.
- Variable names can be subscripted with underscores, such as
`V_th`

. - Single-case, uppercase letters
`C,E,N,O,Q`

and`S`

are not allowed in variable names. - Math function names such as
`sin, atan, fft, fu, Matrix`

, etc. cannot be variable names. `j,i,I`

are all replaced by`j`

and treated as imaginary units.- If you add subscripts to i and I, as in
`I_D, V_i`

, they are not substituted for`j`

and are not treated as imaginary units. - You can test how input characters are interpreted on the page "Evaluate Expressions".

### Example

Input | Evaluation | Description |
---|---|---|

`(x+1)*(x-1)` |
$(x+1)(x-1)$ | `*` cannot be omitted. |

`10**2` |
$10^2$ | `**` is a power. |

`j*j` |
$-1$ | `j` is an imaginary unit. |

`i*V` |
$jV$ | `i` is replaced by `j` . |

`(A+1)/2*B` |
$\frac{(A+1)}{2} B$ | Different from below. |

`(A+1)/(2*B)` |
$\frac{(A+1)}{(2B)}$ | Different from above. |

`V_1*I_bias` |
$V_1 I_{bias}$ | Variables can be subscripted. |