- #1
cleopatra
- 45
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Homework Statement
plot this function:
cos(pi*n)*u(n)
The Attempt at a Solution
n=0:1:10;
y=(n>=0);
x(n) = cos(pi()*n)*y
figure(1)
plot(y)
cleopatra said:Homework Statement
plot this function:
cos(pi*n)*u(n)
The Attempt at a Solution
n=0:1:10;
y=(n>=0);
x(n) = cos(pi()*n)*y
figure(1)
plot(y)
A unit step function, also known as the Heaviside step function, is a mathematical function that has a value of 0 for all negative inputs and a value of 1 for all positive inputs. In Matlab, it is represented as the "heaviside" function and is denoted by the symbol "u".
To plot a unit step function in Matlab, you can use the "plot" function and specify the heaviside function as the input. For example, to plot a unit step function with a delay of 2, you can use the code "plot(t,heaviside(t-2))", where "t" is the time variable.
Yes, you can use a unit step function in an if statement in Matlab by using the "heaviside" function as the condition. For example, the code "if heaviside(x-5)==1" will execute the following code if the input "x" is greater than or equal to 5.
The unit impulse function, also known as the Dirac delta function, is defined as the derivative of the unit step function. In Matlab, it is represented as the "dirac" function and is commonly used in signal processing and control systems. It can be thought of as a function that has an infinitely high value at a specific point and is 0 everywhere else.
Yes, the unit step function can be used to solve differential equations in Matlab by defining it as a piecewise function and using it in conjunction with the "ode45" function, which is used to solve ordinary differential equations. With the help of the unit step function, you can model systems with discontinuities or sudden changes in behavior.