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How do I plot first order function? New to Matlab

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Alexandros
Alexandros 2016-5-6
评论： Azzi Abdelmalek 2016-5-6
Hi! New to Matlab so I have no knowledge. I have some knowledge in C++ and Java and C.
I want to plot the function y=3x+2 So I guess I have to declare 2 variables x and y and plot y for a range of values of x. How do I do this? I am running Matlab2015a-SP1

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Azzi Abdelmalek
Azzi Abdelmalek 2016-5-6
编辑：Azzi Abdelmalek 2016-5-6
x=0:0.01:20
y=3*x+2
plot(x,y)
Or use fplot
y=@(x) 3*x+2;
range=[0 20];
fplot(@(x) y(x),range)

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