new to matlab, can anyone guide me plz?

hey guys just started matlab class, and need guidance through this homeork problem, lets say i ant function f(x)= x^3 range from 0 to 5 how do i put that into matlab. and am i suppose to put the function show next to the graph into matlab?? thanks alot guys(Bow)

Quote:

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Originally Posted by fearless901

hey guys just started matlab class, and need guidance through this homeork problem, lets say i ant function f(x)= x^3 range from 0 to 5 how do i put that into matlab. and am i suppose to put the function show next to the graph into matlab?? thanks alot guys(Bow)

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You can use this code:

Code:

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x=[0:1:5];
y=x.^3;
plot(x,y)

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line 1: set x-values
line 2: here's your equation -- note the .^ operator
line 3: create the plot

P.S. the .^ operator means raise each element of the array to the power. In your case the array is from 0 to 5 with step size 1 i.e. [1,2,3,4,5]

Quote:

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Originally Posted by fearless901

hey guys just started matlab class, and need guidance through this homeork problem, lets say i ant function f(x)= x^3 range from 0 to 5 how do i put that into matlab. and am i suppose to put the function show next to the graph into matlab?? thanks alot guys(Bow)

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Define the function it like this:

Code:

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f=@(x) x.^3

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or:

Code:

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f=inline('x.^3')

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then call with:

Code:

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x=0:0.5:5;
f(x)

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CB