For help with mathematical questions arising from software such as Maple, MATLAB, Mathcad, Pari/GP, R, and the WolframAlpha website, etc. Consider posting questions about Mathematica at the Mathematica StackExchange instead. For GAP, SAGE, and MAGMA, one might use tags (computer-algebra-systems), (gap), (sage), (magma-cas).

# Questions tagged [math-software]

1144 questions

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### plotting a function i

How can i plot bellow function in MAPLE or MATHEMATICA or MATLAB?
$$y=0.05+0.1\cdot e^{0.01x}\cdot \cos(0.2\cdot x)$$
while $x$ can be in the range of $ -350$ to $+350$ or less.
Thank you

sepide shirazi

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### Use LaTeX on Microsoft Word

I realized that in various mathematics textbooks, they all used the LaTeX style in mathematical equations. What software is used? I know if copy-paste from the LaTeX Equation Editor site is less efficient. Can I use a LaTeX template or something…

user516076

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### Is there online software that can let me plot a vector function in a different basis?

If I have a vector valued function with components $x_1= \sin(t)$ and $x_2= \cos(t)$, is there a site where I can just quickly see what it looks like with a basis like $<0, 1,2>, <-1,-1/2>$?

Vane Voe

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votes

**1**answer

### Use matplotlib to plot the functions $y = x^3 + 3x^2 - x + 0.3\ $ and $y = \sin x$

I'm new to Python coding and wondered if someone could give me the coding to plot these two graphs on the same program.
This is what I have so far, exactly as typed on Python, however I know that parts are incorrect.
from matplotlib import pyplot as…

Brooke

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votes

**1**answer

### Tangent line to a 3D curve at a given 3D point

I'm trying to compute tangent vector(x,y,z) to a 3D curve(start x1,y1,z1 end x2,y2,z2) at a point (x0,y0,z0). Can anyone tell if this information is sufficient to calculate the tangent vector? If yes can anyone tell the formula with the help of some…

Kush

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### What will be the input based on the output?

A = 1.0
B = 1.0
C = A / (1-(B/100))
This will give an output as 1.01
What will be the output when A and C are only given?
A = 1.0;
B = ?;
C = 1.01;
1.10 = 1.0 / (1-(? / 100))
What is the answer for B?
Answer: The answer for be is 1.0, But how the…

Naveen

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- 3

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**1**answer

### An algorithm to convert a number to a decimal

Does anyone know a simply conversion algorithm to turn a number range of 1 to 10 into a decimal range of .5 to 1?
Even more complicated (to me), another algorithm to covert a range of -1 to -10 into a decimal range of .5 to 1?

jisaacs1207

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- 1

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votes

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### How can I find $\delta$ given $\epsilon$?

How do I need to show that there exist $\delta>0$ corresponding to $\epsilon= 0.03$, when $(x,y,z)\to (0,0,0)$ using $\epsilon$-$\delta$ definition of limit. Given that $f(x,y,z)$ is
$$f(x,y,z)=\tan^2 x + \tan^2 y + \tan^2 z.$$

Sumit

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- 4

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### Ununderstandable alternate form of a function

Helo, i've a doubt about this function: $$f(x)=\frac{\sqrt{16 - x^2} - x\sqrt{46 + 25( \sqrt[4]2})}{x\sqrt{(46 + 25 (\sqrt[4]2)}}$$
I want to find the roots of $f(x)$ for $f(x)=0$,
Wolfram alpha has given me this results:Alternate form assuming $x$…

Fabio

- 317
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votes

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### Multiplication problem

I have a very simple question
As 0.999⋯≠1
Hence,
var one = 1;
var less_than_one = 0.99999999999999999 (let's say to a computable decimal point)
var greater_than_one = 1.00000000000000000000000.....1 (let's say to a computable decimal point)
var n1…

Prakash P

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- 3

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### Probability of getting at least 2 numbers smaller of the average of n numbers if you pick 3 of them

I have got the numbers " 13, 15, 12, 9, 6, 3, 5, 12, 17, 10, 12, 9, 6, 8, 10, 8, 10" and I have to find ,if I randomly pick three of these
numbers, what is the probability that at least two of them are smaller than the
average of…

coder

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- 5

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votes

**1**answer

### What can I use to create interactive online 3D applets requiring little to no extra software to view?

I've been using Geogebra to create interactive 2D applets for students to learn with. The good thing about Geogebra is that it requires no extra software or browser plugin but just works (even on mobile).
Now I want to do the same thing but in 3D,…

Huy

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- 5
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votes

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### Looking for constructive algorithms ('proofs') that work for nice cases and fail pathological examples

I've been thinking about creating a platform to help others learn mathematics.
This platform would use some custom made programming language to write some problems and its solutions.
The problem with such a project, is that it would be pretty…

YoTengoUnLCD

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votes

**1**answer

### Bisectrix of a triangle in tikz

I'm trying to make a triangle with its bisectrices. I made the first bisectrix with the command:
\begin{tikzpicture}[scale=3]
\coordinate (A) at (1,0);
\coordinate (B) at (0,0);
\coordinate (C) at (30:1cm);
\coordinate (D) at (15:1cm);
…

Timóteo A. Cruz

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- 2

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### Does someone know an online-applet for the Risch-algorithm?

The Risch-algorithm allows to determine whether a given function has an elementary antiderivate (and to calculate it, when it exists).
Does someone know an online-applet for this algorithm ?
I have heard that some math-programs support the…

Peter

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