How to plot general solution of a trigonometric function???

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HARSHA GYANANI
HARSHA GYANANI 2018-4-11
评论： Walter Roberson 2020-3-21
I want to plot a graph of a and b defined by this equation. 1-2*cosd(a)+2*cosd(b)=0 when I started plotting only graph of the principal solutions of cos is considered. whereas i want all possibilities of general solutions. by using contour only plot of functions can be drawn. what do i do now????
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HARSHA GYANANI
HARSHA GYANANI 2018-6-17
I am using 2015,,,, can u please send me code of 2015a as i dont know how to convert this using bsxfun
Walter Roberson
Walter Roberson 2018-6-17
Macosd = @(X) sort([ bsxfun(@plus, (-1800:360:1800).', acosd(X)); bsxfun(@minus, (-1800:360:1800).', acosd(X))]);

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回答（2 个）

KSSV
KSSV 2018-4-11
N = 100 ;
a = linspace(0,2*pi,N) ;
b = linspace(0,2*pi,N) ;
[X,Y] = meshgrid(a,b) ;
Z = 1-2*cos(X)+2*cos(Y) ;
surf(X,Y,Z)
hold on
contour(X,Y,Z,[0 0],'r')
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Vivek Kumar
Vivek Kumar 2020-3-21
bro please help me to plot a graph delta_lambda=h(1-cosX)/cm please help me
Walter Roberson
Walter Roberson 2020-3-21
Vivek Kumar: you should open a new Question for that. In that Question, please indicate which variables are your independent variables, and what range of values you want, and what style of plot you want.

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Torsten
Torsten 2018-4-13
Derive b as a function of a, prescribe a range for a, calculate b and use "plot(a,b)".
Best wishes
Torsten.

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