Given three functions f,g and h, create the composed function y=f(g(h)).
f = @(x) x+1
g = @(x) x/2
h = @(x) x^2
And x1=8; x2=10; x3=1;
y(x1) = 33
y(x2) = 51
y(x3) = 1.5
Select every other element of a vector
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