Tagged Questions

Homework questions are welcome, as long as they are asked honestly, explain the problem, and show sufficient effort. Please do not use this as the only tag for a question. Please do not add this tag to questions by other people unless they explicitly say that their question is part of their homework....

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How do you manipulate this in 2D

Use Manipulate to create an interactive plot that shows the parametrically-defined curve described by {x[t], y[t]} = {t Sin[t], t^2/15} for ...
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Gauss-Jordan program in Mathematica

Hi to everyone I made this program to solve a linear system by Gauss Jordan, this is my code to solve the system: ...
141 views

Particle moving on curve which is the intersection of a surface and a plane

Surface z = 2 x^3 - 5 y^4 Plane z = x + y + 5 Plot A curve is formed by the intersection of the surface and the plane. ...
63 views

Calculating extrema of a given function on a geometrical region

I've never used Mathematica before. Now I have to figure out, for one of my classes, how to find the max and min of the function $f(x,y)=x^3+2\ xy$ over the triangular region of the plane with ...
66 views

what is wrong with this plotting code? [closed]

Heres the question: The region bounded by f(x) = x+2 and g(x) = sin(x) between x = 0 and x = Pi/2 i. Plot the region on the interval [0,Pi/2], between y = 0 and y = 4. ii. Find the area of the ...
79 views

How to find roots using the bisection method [duplicate]

First I plot the function and then I try to find a domain such that I can see the curve cut through the x-axis. I do this via trial and error ...
66 views

Poisson point distribution

The probability of n telephone calls received at an exchange in a time frame (t_i, t_f ) is given by the Poisson point distribution: ...
78 views

Plotting a table with varying step sizes

how can I plot the below green curve? Is there any way I could manipulate the step sizes? This is my current code: ...
141 views

Use Select to filter a dataset's sublists

In the following Dataset, I want to use Select to display only rows, which contain numbers in column ...
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Module that prints first m positive odd integers and returns the square root of the sum of them

I am working on this problem and I feel like I've come so close. Write a module that takes as input a positive integer m, prints the first m positive odd numbers and returns the square root of the ...
121 views

Numerical approximation using trapezoidal formula [closed]

I have bumped into a problem, that I cannot solve. I have to approximate the value of ln3 using a composite trapezoidal formula, so that the error should be within (10)^-3! How can it be solved?
198 views

Plotting the solutions of $y' = -\frac{\cos y}{\sin x}$

I struggle with the problem of plotting the solution of this ODE: $\qquad y' = -\frac{\cos y}{\sin x}$ I've already tried to use ContourPlot in a loop and in a ...
74 views

Why does the asterisk go up when you switch from input to another mode? [closed]

So my teacher said that if we solved this question we would get extra credit (please tell me if I'm being too vague and I will clarify) When you change from the input to the regular text mode in ...
74 views

calling multiple functions in manipulate [closed]

Continuation Manipulate function to generate outliers I want to call a function in the manipulate environment so that the changing data is fed to another function and both the plots are plotted in a ...
67 views

Statistics question! I am new here! And I am STUMPED on the Dice rolling question! [closed]

I am new here! I need some help! A regular dice has six faces, with numbers 1, 2, 3, 4, 5, and 6. A typical roll of a dice will land on one of the 6 faces, and the number that is displayed can be ...
136 views

Zeno Paradoxes is about a Greek Heroes Archilles having a race with tortoise. the tortoise given a head start distance. Greek heroes Archilles have constant speed ...
98 views

Writing a function to set up and solve the least squares problem

I have setup the explicit line equation for a given set of points using least-squares approximation and the knots computed below. I have tried extending the same code for use with an arbitrary degree, ...
112 views

How to input functions into Mathematica [closed]

I need help with this assignment like asap. I've never been taught how to use this program and our math department expects us to learn how to use it, but it is just so complicated!!! Please help me ...
90 views

Find Values of a and b for a Limit

I am having trouble finding the values of a and b for which $\lim \limits_{x \to 0}$ $(\frac{\sin (ax) + bx)} {(x^3)}) = -32/3$. In Mathematica I have entered: ...
228 views

Exercise using Sort

I have to order the following list according to the sum of the powers of each element of the list, using the function Sort. ...
97 views

solve Z of matrix [closed]

x=Cz+(lambda)z x and z are n*1 column vectors C is n*n matrix (lambda) is a scalar it want to solve for z. the hint is z=Iz where I is n*n also C+(lambda) is an invalid expression, but C+(lambda)I ...
221 views

Using Plot and Piecewise to graph a roller coaster

I am graphing a roller coaster using Piecewise and Plot commands on Mathematica. I have the first 2 Piecewise functions and would like to add a loop to the end of it. Here is my initial graph: This ...
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Power series graphs?

I would like to graph this function and its first 6 Taylor polynomials on the same axis, but I'm not sure how to start: f[x_] = Exp[x]; Plot[f[x], {x, 0, 1}]
594 views

Using RegionPlot3D to make a cone under restrictions

I have to plot a cone that satisfies this statement: Use the RegionPlot3D command to draw a picture of a cone with its point at the origin. The other end of the cone is a circle with radius 5 ...
413 views

Generating a polynomial that's accurate to within an error of no more than 1/10^5

I'm currently stuck on a question for class that asks... "Find a polynomial p[x] that you can use to calculate 6 ArcTan[x] to ...
1k views

Solving One Equation with Two Variables

I am trying to solve an equation with two variables. It is the last step in the process of using the method of undetermined coefficients to solve a nonhomogeneous differential equation. The equation ...
128 views

I have the roots; how can I find an equation that they will satisfy?

I have two solutions; I want is to find an equation that these solutions satisfy using mathematica. The solutions are $x= \frac{{(26-k)}^2}{26}$ and $y= \frac{{k}^2}{26}$. I know by hand computing ...
165 views

Formatting ANOVA table and/or ParameterTable without using Grid?

Does anyone know if there is an option or function that can automatically format the output of ANOVATable and ParameterTable, ...
690 views

Handling ± in a set of equations

First let me post the question that I am doing: You see for wave equation y2, there is a ± sign. I know how to do + or ...
207 views

Plotting and ContourPlot

Make a Plot and a ContourPlot that gives the same diagram and use ContourPlot on a quadruple ...
114 views

I would like to duplicate this graph: I've used this code to draw the circle: Graphics[{Circle[{0, 0}, 3, {-2Pi, 2Pi}]},PointSize[.025]] But Mathematica ...
2k views

How to make a resizable chess board?

For some reason I need to create a chess board. I can create a chess board by following command: ...
209 views

Least Square Fitting

stuck on a mathematica assignment and could really use some help. A) Fit a function with the shape log(Y) = a0 + a1log(U) to the datapoints (log(Ui), log(Yi) with an least square fitting. Show this ...
Can someone please answer these two parts of my homework assignment? Adding an explanation would be appreciated! a. Test the Erdos square free conjecture for $n <= 30000$. You should use ...