提问

Function to chop a decimal to a variable number of digits
I wrote the following function to approximate a number using chopping arithmetic. chop(5,4.333352312) function output = ...

4 years 前 | 2 个回答 | 0

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Format coefficients of the derivative of a function
The following code is meant to output the derivative of a function but the coefficients are displayed as fractions even when I t...

4 years 前 | 1 个回答 | 0

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Incorrect plot domain when using linspace
The plot generated by the following code should have a domain from 0 to 5 but instead each x value is multiplied by a factor of ...

4 years 前 | 1 个回答 | 0

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Finding x and y values of a point on a Simulink plot
I am trying to determine the x and y values of certain points on a Simulink temperature entropy plot. Normally when I hover over...

4 years 前 | 1 个回答 | 0

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Modelling Open Circuit Test of Single Phase Transformer using Simulink
I am trying to model the open and short circuit tests using Simulink but certain blocks and objects are missing. For example, wh...

4 years 前 | 1 个回答 | 0

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Format a matrix with entries displayed as exact values
I am trying to print a matrix with its entries displayed as exact values not fractional approximations. For example, the followi...

4 years 前 | 1 个回答 | 0

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Using plot3 to plot 3d vectors
The following code is meant to plot the vectors (4,5,6), (-3,6,-3) and (1,2,3) directed from the origin. plot3([0 4], [0 5], ...

4 years 前 | 1 个回答 | 0

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Saving a file in Matlab R2020a
I recently installed Matlab R2020a on my Windows 10 laptop and whenever I create a script or function file and click "Run" I am ...

4 years 前 | 1 个回答 | 0

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Cannot call or index into a temporary array error message
I am trying to access the elements of a 1 by 2 variable that is defined by a function handle, p2r, but when I define a separate ...

4 years 前 | 1 个回答 | 0

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Solving a system of equations involving complex numbers
The following code outputs a value for a and b with respect to the imaginary number i but the output is not fully simplified wit...

4 years 前 | 1 个回答 | 0

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Simplifying solution to algebraic system of equations
The following code outputs a value for a and b with respect to the imaginary number i but the output is not fully simplified wit...

4 years 前 | 1 个回答 | 0

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提问

Solving a symbolic equation in one or more variables
When the following code is executed, the output is ans = Empty sym: 0-by-1 although b = i = yp = [1 90] I get the same re...

4 years 前 | 2 个回答 | 0

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Defining a symbol to perform a specified operation
Is there a way, for example, given two numbers a and b I can either use a function or define a symbol, say %, such that a%b = (a...

4 years 前 | 1 个回答 | 0

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提问

Phasor representation of complex numbers
Instead of typing (3+4i)*(i), how can I multiply two complex numbers in phasor form, in this case (5∠(arctan(4/3))*(∠90), and ...

4 years 前 | 2 个回答 | 0

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Changing where divisions appear on a Matlab plot
The following code generates a plot in which the scale divisions appear at the edges of the plot but they do not coincide with t...

4 years 前 | 1 个回答 | 0

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Improving readability of Matlab graph
The plot generated by the following code appears with the ticks labelled 1 to 25 for the x axis and 0 to 20 for the y axis. I wa...

4 years 前 | 2 个回答 | 0

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Unexpected output when trying to plot the solution to a system of nonlinear differential equations
The following Matlab code is meant to plot x(1) vs time and x(2) vs time separately, but only plots x(1) vs time. Despite there ...

4 years 前 | 1 个回答 | 0

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Plotting the solution to a system of second order differential equations
I am having difficulty interpreting the plots generated by the following code. Is there a way I can generate a single plot inste...

4 years 前 | 1 个回答 | 0

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Plotting angular position versus horizontal position of a composite body and labeling specific points
I am trying to graph the solution to a system of differential equations. The following code graphs four functions, but they are ...

4 years 前 | 0 个回答 | 0

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Adding a redundant equation to a system of algebraic equation that generates inconsistent output
In a dynamics problem I am working on, two different systems of equation that describe the motion of a body are both correct and...

4 years 前 | 0 个回答 | 0

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Simplified solution to system of algebraic equations
The following code solves the system of equations for x, but the solution could be further simplified, for example, by factoring...

4 years 前 | 1 个回答 | 0

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Symbolic solution to a system of algebraic equations
I get an error message stating "Reference to non existent field b" when I try to solve for b in the following system of algebrai...

4 years 前 | 1 个回答 | 0

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Symbolic solution to a system of equations
Can Matlab solve a system of equations like a+b=c, b=2c symbolically for b and c? The output should be c=-a, b=-2a

4 years 前 | 2 个回答 | 0

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Symbolically Solving a multi-variable system of three equations for three variables
How can I find symbolic solutions for a,b, and c expressing them with respect to the other variables using the system of equatio...

4 years 前 | 1 个回答 | 0

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Solving a system of second order differential equations
I get the following error message when I run the code below (although this error does not always occur; sometimes the plot is ge...

4 years 前 | 1 个回答 | 0

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Finding the closed form solution to a system of second order differential equations
I am trying to find the closed form solution to a system of differential equations but I am unsure how to access the closed form...

4 years 前 | 1 个回答 | 0

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Finding the solution to system of Differential equations
I am trying to graph the solution to the following system of differential equations and finding the closed form solution using f...

4 years 前 | 0 个回答 | 0

0

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Graphing and finding the closed form solution to a system of differential equations
I am trying to graph the solution to the following system of differential equations and finding the closed form solution using f...

4 years 前 | 1 个回答 | 0

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Describing the motion of a composite body using system of differential equations
I am trying to solve a system of differential equations analytically using the following code, but although they correctly descr...

4 years 前 | 1 个回答 | 0

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Describing the motion of a composite body using system of second order differential equations
I am trying to graph the solution to the following system of differential equations. t''= t'^2(tan(t)) - x''(4sec(t)) t'^2 (...

4 years 前 | 1 个回答 | 0

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