FIRST HP: Exact values

Hello

Can someone please help me solve this mathematical problem using the first HP Calculator:

f: (-π, π) (π, 3π) U-> R, f (x) = sin(x/2) + tan(x/2) find the exact balues of f: (-π, π) U (π, 3π) as display = 0

I know how: calculate appear, set the domain to help to assume (x >-π AND x < π) and is then to solve the function display = 0 but I have a string of decimal instead of exact values values (even if I'm on the "Exact" parameter in "CASE settings").

Can someone please help me with my first HP Calculator settings so that I can solve the answers accurate above equation and get on my computer.

Kind regards

Arthanasios

I'm doing this.

First go to settings of CASE by pressing SHIFT - CASE.

Reset the default settings by pressing Shift + Esc.

Then press the CASE to go to the view of the CASE.

Come in:

f: = Sin(x/2) + Tan(x/2)

g: = diff (f)

Solve (g = 0) returns {2 * pi, -2 * pi} which is correct.

These are only the main solutions.

When you want to General solutions you change CASE settings by unchecking: main.

Then you get as a result: {4 * n_0 * + 2 * pi, 4 * n_0 pi * pi - pi * 2}

Tags: HP Tablets

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