How to use tan(X) in matlab

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Jongmin Paik
Jongmin Paik 2020-3-26
评论： Walter Roberson 2020-3-26
f_f0=(0:0.1:5)'
Bl=(pi/2)*f_f0
v=tan(Bl)
In this coding, values of 'v' are all '0'.
I don't know where this coding was wrong.
Please help.
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Jongmin Paik
Jongmin Paik 2020-3-26
You say trying '0:0.1:5' was wrong..
Then How to use tangent for 0:0.1:5?
Torsten
Torsten 2020-3-26
No, not wrong, but the difference in magnitude of thenumbers of the output is large.
You will haveto change the output format.

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回答（1 个）

Walter Roberson
Walter Roberson 2020-3-26
Give the command
format long g
and display v again.
The values in v are not 0: they are only 0 to 5 decimal places compared to the "1.0e+16 *" that you did not happen to notice at the top of your display of the content of v.
I recommand that you go into Preferences and permanently modify the preferred output format to be "long g"
  2 个评论
Jongmin Paik
Jongmin Paik 2020-3-26
Thanks for your helping!!
I want to know that 'long g' means.
Walter Roberson
Walter Roberson 2020-3-26
https://www.mathworks.com/help/matlab/ref/format.html#btiwmh5-3
longG: Long, fixed-decimal format or scientific notation, whichever is more compact, with a total of 15 digits for double values, and 7 digits for single values.

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