HOW TO PLOT A GRAPH WITH A FUNCTION AND A CONSTANT

Can anybody please help me draw this graph using matlab to look like the figure shown bellow.

Dw<1.1 THEN Hu=cos(Dw)

Dw>1.1 Hu=.45

[Rik]

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Answer 1

[Star Strider]

I believe the 0.45 value should actually be 0.35 —

syms t 
Dw = 1.1;
Hu1 = cos(Dw*t)

Hu1 = 

Hu2 = 0.35;

figure
fplot(Hu1,[0 1.1])
hold on
fplot(Hu2, [1.1 2])
hold off
grid
ylim([0 1])

There are also other ways to do this, perhaps using the piecewise function.

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