Question: In mathematics we can assume that `sin(t1)` is equal to `t1` for very small angles. How to do that in Matlab?

```
syms t1;
res = sin(t1);
res2= MAGIC(res,t1);

```

I need `MAGIC`to change `res`, such that it becomes `t1`.

Thanks

Answer: 
You can add a facade in your `folder\config\app.php`

```
'Input' => Illuminate\Support\Facades\Input::class,

```
```
   #config/app.php
   'aliases' => [
        ...
        'Input' => Illuminate\Support\Facades\Input::class,
        ...
    ],

   #Use Controller file
   use Illuminate\Support\Facades\Input;
   ==OR==
   use Input;

```

Read full example: <https://devnote.in/laravel-class-input-not-found>