How do I graph a function handler(h_​func=@(a,b​),where a=10cos(x), and b=5sin(x)) that has other function handlers inside the function?

I'm having problems graphing this program, that consists of three anonymous functions. The object is too create three anonymous functions, with the third h_func=@(a,b)sqrt(a^2+b^2) and graph it over a range of -10<x<10 with a seperate plotFunc function. These are the three functions so far;

cos_funct=@(x)10*cos(x);

sin_funct=@(x)5*sin(x);

h_funct= @(x)sqrt((sin_funct.^2)+(cos_funct.^2));\

This is the plotFunc function that I am supposed to use to plot (h_funct) function plotFunc( fun,points )

fname=func2str(fun);
hold on;
plot(points,fun(points));

title(['\bfPlot of ' fname '(x) vs x']);

xlabel('\bfx');
ylabel(['\bf' fname '(x)']);
grid on;

end\

My problem is that whenever I call plotFunc(h_func,[-10:10]) it always gives me an error or gives me a blank graph.

Answer 1

[Guillaume]

Read up on the syntax of anonymous functions.

The bit in brackets after the @ are the arguments of the anonymous function. The bit after that is what to do with these arguments.

In h_funct, you're not doing anything with your argument. Maybe you ought to pass it to the other functions.