Plotting functions using subplot

Hi I hope you can help.

How do I plot funtions like this (see below) While using subplot?

f(x) = 3 sin2 (x) + cos(x/2), x ∈ [−3, 6.5]

g(x, y) = x 4 − 8y 2 + x + 4, x, y ∈ [−5, 5]

r(φ) = 2 + cos(5φ), φ ∈ [0, 2π]

Thank you!

[Dyuman Joshi]

Look into

subplot tiledlayout

fplot

fsurf

Answer 1

[Image Analyst]

% f(x) = 3 sin2 (x) + cos(x/2),  x ∈ [−3, 6.5] 
% g(x, y) = x 4 − 8y 2 + x + 4, x, y ∈ [−5, 5]
% r(φ) = 2 + cos(5φ), φ ∈ [0, 2π]
subplot(3, 1, 1);
x = linspace(-3, 6.5, 1000);
f = 3 * sin(x) .^ 2 + cos(x/2);
plot(x, f, 'r-', 'LineWidth', 2);
grid on;
xlabel('x')
ylabel('y')
subplot(3, 1, 3);
phi = linspace(-5, 5, 1000);
r = 2 + cos(5 * phi);
plot(phi, r, 'r-', 'LineWidth', 2);
grid on;
xlabel('phi')
ylabel('r')

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