Label x axis in radians WolframAlpha

Question

I am trying to graph a trig function in WolframAlpha. I want the x axis to show radians. It will do this for a basic function, such as $y=\sin x$, but for many functions it will just label the x axis from -10 to 10. I have googled this and this is the best I can come up with:

plot sin (x/2 -pi/16) ,Ticks ->{{-pi, -pi/2, 0, pi/2, pi, 3pi/2, 2pi, 5pi/2},{-1,1}}

It doesn't work, WolframAlpha just plots the function from -10 to 10 on the x axis.

score 6 · Accepted Answer · answered Aug 25 '13 at 09:32

6

For more sophisticated plots WolframAlpha is not the best option, I only use it for a first idea of the function. Never the less using Mathematica Syntax might help.

At least the PlotRange you can chose via

Plot[ Sin [x/2 - Pi/16], {x, -Pi, 5 Pi/2}]

which gives you this

If you have Mathematica you have a lot more options for Plots, using the command

Plot[ Sin [x/2 - Pi/16], {x, -Pi, 5 Pi/2}, 
    Ticks -> {{-Pi, -Pi/2, 0, Pi/2, Pi, 3 Pi/2, 2 Pi, 5 Pi/2}, {-1, 1}}]

gives you

enter image description here

answered Aug 25 '13 at 09:32

Dominic Michaelis

19,935

is the same possible in "maxima"? – Vikram Aug 25 '13 at 09:35
I don't konw maxima i am afraid – Dominic Michaelis Aug 25 '13 at 09:42
Thanks for the tip about setting the Plot Range. I don't have access to Mathematica. It would be good to find a free piece of software that does allow me to specify the axes how I wish. – mikoyan Aug 25 '13 at 15:46
1

@mikoyan I guess there are tons of free software for this. Even $\LaTeX$ can do this if you use packages like TikZor others. – Dominic Michaelis Aug 25 '13 at 15:51
Yes, but this does not keep sub-ticks... – Alexey Bobrick May 02 '16 at 14:07

score 0 · Answer 2 · answered Nov 07 '17 at 14:02

I know this is a little tedious, but in the free version of Wolfram Alpha, you can still have it give you results at any point even if you can't do the ticks.

In particular, before the graph it will still nicely list all the global maxima and minima with the max{} and min{} functions. For example: max { sin(x) } from x=0 to 8 pi will list out where the global maxima is. The min function works identically. Here, the result is given in radians, even though the axis unit ticks are not.

Label x axis in radians WolframAlpha

2 Answers2