Can someone explain what's wrong with my formula?
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
close all
clear
clc
syms t
omega = 2:2:6
I = 10
C = 0.05
V = (-I./omega.*C)*cos(omega.*t)
fplot(V)
What is wrong with it? I get an error when I try to run it.
0 Kommentare
Akzeptierte Antwort
Weitere Antworten (1)
Walter Roberson
am 30 Sep. 2021
omega is a vector, so (-I./omega.*C) is a vector and cos(omega.*t) is a vector the same size.
So you have 1 x 3 row vector * 1 x 3 row vector. But the * operator is algebraic matrix multiplication, "inner product". In the expresson A*B then size(A,2) must equal size(B,1) -- the "inner" dimensions must match. The first 1 x 3 vector operand for the * operation has 3 columns. The second 1 x 3 vector operand for the * operation has 1 row. But 1 is not equal to 3, so the * operation fails.
The element-by-element multiplication operator is .* instead of *
0 Kommentare
Siehe auch
Kategorien
Mehr zu Logical finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!