how do i write this equation in live script

Create a function handle called f which takes a single input variable and performs the following calculation.

f(θ) = sin3(θ) 2 + cos(θ) sin(2θ)

The function should be “vectorized” with element-wise operators, where appropriate, so that it can take single numbers as input or matrices as input.

Answer 1

[Image Analyst]

What does sin3(θ) 2 mean? Tell us in words because there is no sin3() function.

Try

theta = linspace(-pi, pi, 1000);
f = sin(theta).^3 + cos(theta) .* sin(2*theta);

Adapt as needed after you figure out what that weird equation means.

[mark@4882]

I have insetered a image

[Walter Roberson]

is sin(theta).^3

is sin(2.*theta)

[Image Analyst]

Manav, with the divide symbol (slash) and using additional parentheses, you should be able to figure this homework out on your own.

[Walter Roberson]

./ and .* for vectorized form

[mark@4882]

f('\theta') = @('\theta) (sin('/theta').^3)./(2 + cos('/theta') sin(2.*'\theta'))

I'm still getting an error

[Walter Roberson]

You cannot use \theta or '\theta' as the name of a variable.

f = @(theta) (sin(theta).^3)./(2 + cos(theta) .* sin(2.*theta))

However you appear to have forgotten that MATLAB does not have any implicit multiplication. If you want to multiply two values you must use either the * or .* operation. The * operation is for algebraic matrix multiplication ("inner product") and the .* operation is for element-by-element multiplication.