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Use Matlab plots to determine how many real-valued solutions sin 2x = x has.

Use Matlab plots to determine how many real-valued solutions sin 2x = x has.

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Answer #1

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clc;clear all
x=-10:0.01:10; %Taking x in range of -10 to 10
y1=x; %Value of y1
y2=sin(2*x);
plot(x,y1,'-r',x,y2,'-b','LineWidth',2) %Plots the curve sin 2x=x
xlabel('x');ylabel('y');legend('y=x','y=sin 2x') %Adds label and legend
grid on
%Clearly the graph intersects at 3 points, so 3 solutions exist to x=sin2x

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