## Executing subsections from if statements...

Hi all!

I was wondering if it was possible to execute different subsections in my sheet based on if statements? I'm calculating two different processes and by being able to switch between the two with if statemens it would save me a lot of variables. Lets say i have three subsections in my sheet:

• Variables
• Process 1 calculation
• Process 2 calculation

So by using an if statement i can choose which calculation that should be used, and therefore i can use the same variables. Or at least that's what i hope :)

Thanks!

## All distances of point to point on the sphere are ...

The two points on the sphere has radius r=1/2. So, the distance is 1.
The three points on the sphere has radius r=1/sqrt(3). So, all distances are 1.
The four points on the sphere has radius r=sqrt(6)/4. So, all distances are 1.
What is the smallest sphere radius for 5 points and above numbers?

Find the smallest sphere radius and 3D position of each point.

Tokoro.

All distances of point to point on the sphere to be integer.
The two points on the sphere has radius r=1/2. So, the distance is 1.
The three points on the sphere has radius r=1/sqrt(3). So, all distances are 1.

The four points on the sphere has radius r=sqrt(6)/4. So, all distances are 1.
What is the smallest sphere radius for 5 points and above numbers?  Find the smallest sphere radius and 3D position of each point.

 >  >  The answer of 4 points. r=sqrt(6)/4   ## All distances of point to point on the circle are ...

The two points on the circle has radius r=1/2. So, the distance is 1.
The three points on the circle has radius r=1/sqrt(3). So, the all distances are 1.
What is the smallest circle radius for 6 points and above numbers?

All distances of point to point on the circle to be integer.
The two points on the circle has radius r=1/2. So, the distance is 1.
The three points on the circle has radius r=1/sqrt(3). So, the all distances are 1.
What is the smallest circle radius for 4 points and above numbers?

 >  The answer of 5 points. r=16/sqrt(15)   ## How to inscribe a given triangle in a circle?...

Hey sorry again, with a given triangle how can I inscribe it in a circle and how do I find the circumcenter?

## Help adjusting an exponential function with horizo...

Hello, I'm just beginning to appreciate and enjoy the use of math to solve practical problems I encounter while working on sound synthesis and music composition, my main occupation. I've had no formal training on math but take it as a hobby and try to tutor myself with the occasional aid of books, videos and a couple of really patient friends. As they're currently not around, I bring here the issue I'm now struggling with:

I'm trying to model a function which would output the time taken for a voltage controlled amplifier to raise or decrease its volume from one level point to another at a given scaled rate (which you can set in the device, but is not expressed in db/sec, only with an integer from from 1 to 99). When the beginning and end level points are the min. and max. that the device allows, the time (y) to rate scale (x) function plots a nice exponential curve (of the form y=b*e^-cx). However, when the min and max levels are respectivly augmented or reduced and the volume range the amplifier has to cross gets smaller, the time taken at a given rate changes not as steadily. So for this situation, for each of the scaled rates I want to consider I draw a curve: on the x axis I plot increments of the amount summed or substrated to the min or max levels, and continue marking time on y. And then I get an exponential of the same form as before but only for some values of x: the curve suddenly flattens and approaches a horizontal asymptote when approaching low values. Rather by chance I figured that something with the form y=1+e^-e^x might to the trick. My question is how to adjust that function to my plotted curve, given that I know the actual function that leads the simple exponential portion: 16.7*e^-0.01x for x=22 onwards, y=14.7 from x=0 to x=22.

Any help would be greatly appreciated

## Plot RowSpace of a 2-by-3 Matrix in 3D...

Consider matrices A and B below; how one can plot basis vectors of column space in 2d, and plane or line spanned by basis of row space in 3D?

with(LinearAlgebra):
A := Matrix([[2, 3, 5], [1, 2, 7]]);

ColumnSpace(A);
RowSpace(A);

B := Matrix([[6, 4, 2], [3, 2, 1]]);

ColumnSpace(B);
RowSpace(B);

## How can I simplify the expression by applying equi...

How can I simplify the expression by applying equivalent infinitesimal  in symbolic computation?

For example,for small x,  limit(x/sin(x) + x, x = 0),  I want to get 1+x, rather than 1. In fact, how can I set an assumption that x is small and let the expression be simplified or replaced by other equivalent infinitesimal terms?

## How do i solve a System of PDEs in maple?...

sol := {c[1, 1] = 18.00000000, c[1, 2] = -0., u[1, 1] = -.9000000000, u[1, 2] = 0., x[1, 1] = 3.600000000, x[1, 2] = -0.} How we can assign each in solution1 individually as a Variable.

## Definite integral with given conditions...

Could you help me solving this the problem with Maple, please? Thank you so much! ## Gauss seidel with chebychev acceleration ...

Dear all

I know how can I use gauss seidel to solve a linear system.

But, how can we add chebychev acceleration.

Thank you

## how to find fermat point...

How do you find the fermat point of a triangle? (a point such that the sum of the three distances from each of the three vertices of the triangle to the point is the smallest possible.)

## How to connect to additional frames of machine ele...

When defining 2 frames as shown here only one additional port is shown in the workspace. Mouse over indictes an array of 2 ports. I could not find any examples or explanations how to connect to an array of frames.

Can someone connect two ridig body frames to it?

Box.msim

## Matlab to Maple...

Hello, i'm new in maple and i don't know how to programming in it. i need to write two For loop in maple to make a matrix. i can write it simply in Matlab as:

Regards