Question

What are the first three terms of (3^n-1/n!)?

Answer 1

`(1,2),(2,8.5),(3,26.833)`

Explanation:

The way i would do this question is to plot it into desmos.com
When plotting `y=3^x-1/(x!)` You get the following graph:
Graph: http://prntscr.com/jhwcxo

The points that intersected x = 1, x = 2 and x = 3 were your answers.
The three points were `(1,2),(2,8.5),(3,26.833)`

Desmos will give your answers to 3dp so unless your teacher wants an exact answer you have it!