Inconsistent results for the the root of an equation?

Questions
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1

Hi Guys

I am new to Mathematica, and still getting used to its interface.

Please refer to the attached image (1), it is a bit unclear, however I believe that it is readable.

The code presented in the image is the roots of an equation.
When retyping the same code into Mathematica I get a completely different answer as per image (2).

Apologies but I am running Mathematica from my Pi and struggling to post on the forum from Rasbian.

Can anyone assist with an explanation for the difference in results?

1.jpg
1.jpg4032×3024 3.35 MB

2.jpg
2.jpg4032×3024 2.72 MB

2

Welcome to Wolfram Community! Please make sure you know the rules: https://wolfr.am/READ-1ST

The rules explain how to format your code properly. Posting code Images doesn’t help other members to copy your code. Please EDIT your post and make sure code blocks start on a new paragraph and look framed and colored like this.

int = Integrate[1/(x^3 - 1), x];
Map[Framed, int, Infinity]

You can also embed notebook or attach notebook.

Editor_WC_3.png
Editor_WC_3.png958×303 31.8 KB

3

Try Solve instead of Roots.

4

It is your inconsistency in the capitalization: Sin and Cos, instead of sin and cos.