Plotting the graph of (4*x*sinx − 3)/(2 + x^2 )

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Tuna KISAAGA
Tuna KISAAGA 2021-4-3
回答： VBBV 2023-4-12
f(x) = (4*x*sinx − 3)/(2 + x^2 ) for 0 ≤ x ≤ 4
How can I plot the graph of this function?
x=linspace(0,4,400);
y=((4.*x.*sin(x))-3)/(2+x.^2);
z=zeros(1,400);
figure
plot(x,y)
hold on
plot(x,z,'--')
title('Plot of (4*x*sin(x)-3)/(2+x^2)')
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回答（1 个）

VBBV
VBBV 2023-4-12
Ran in:
Use the element wise division for the equation
x=linspace(0,4,400);
y=((4.*x.*sin(x))-3)./(2+x.^2);
%^ use element wise division
z=zeros(1,400);
figure
plot(x,y)
hold on
plot(x,z,'--')
title('Plot of (4*x*sin(x)-3)/(2+x^2)');

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