# Doddy Kastanya

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I love math and physics. Being a nuclear engineer keeps this alive.

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**Feeds**

Solved

Calculate Wind Chill Factor

The NWS Wind Chill Temperature (WCT) index formula for calculating the dangers from winter winds and freezing temperatures: Cal...

ungefär ett år ago

Solved

Split Even Number Into Two Primes

Given an even whole number n (> 2), return a 2-element vector of primes, p, such that p(1) + p(2) = n. Fun note: technically it...

mer än ett år ago

Solved

Triangle Coordinates

Given a natural number n, return two -element vectors, x and y, containing the coordinates of a triangular arrangement of points...

mer än ett år ago

Solved

Predict Cricket Stridulation Rate from Air Temperature

Stridulation is the process that creates a cricket's “chirp” by rubbing their wings or legs. According to the Old Farmer's Alma...

nästan 2 år ago

Solved

Find Air Temperature from Cricket Stridulation Rate

Stridulation is the process that creates a cricket's “chirp” by rubbing their wings or legs. According to the Old Farmer's Alma...

nästan 2 år ago

Solved

Is A the inverse of B?

Given a matrix A and a matrix B, is A the inverse of B? >>A=[2,4;3,5]; >>B=[-2.5,2;1.5,-1]; >>isInverse...

mer än 2 år ago

Solved

Rotate counterclockwise a matrix 90 deg with left-bottom element

Example: Input [ 1 2 3 4 5 6 ] Output [ 3 6 2 5 1 4 ]

nästan 3 år ago

Solved

Easy Sequences 2: Trigonometric function with integral input and output

The function 'F', defined as: , will always return an integer if the input is a natural number (in radian...

nästan 3 år ago

Solved

letter yes yes & letter no no

Split a string into two strings, wherein the first string has all alphabetic letters and the second string has all the remaining...

mer än 3 år ago

Solved

the fly, the train, the second train, and their Zeno's paradox

*You have heard this one*: A train leaves station _A_ and travels with constant velocity _v1_. A second train leaves station _B_...

mer än 3 år ago

Filling missing points in a grid

You could try to add the following at the end of your code: hold on text(7,8,'X','color','r') If there are other points, then...

mer än 3 år ago | 0

| accepted

Need Help Coding a Gaussian Problem

You might not be using the correct data for this. For example, in your implementation x_i and x_j are simply numbers. Shouldn't ...

mer än 3 år ago | 0

How can I find the median of each row in a matrix?

Try this (assuming that your matrix is called A): for i=1:150 x=sort(A(i,:)); median_value(i)=0.5*(x(2)+x(3)); end You will...

mer än 3 år ago | 0

Solved

Calculate Engine Power

Calculate Engine Power (P) in kW given the values of Torque(M) in Nm and Engine Speed(n) in rpm

mer än 3 år ago

Solved

Electrical Diode Current Calculation

In engineering, there is not always a single equation that describes a phenomenon accurately enough to be applied in all instanc...

mer än 3 år ago

Solved

An Ohm's Law Calculator

*BACKGROUND / MOTIVATION:* Many important observations in math and science can be described by short, but powerful, equations...

mer än 3 år ago

Solved

Create an anti-identity matrix

Create an anti-identity matrix of given dimension. Examples n = 2 A = [0 1; 1 0] n = 3 A = [0 0 1; 0 1 0; 1 0 0...

mer än 3 år ago

Solved

determine the sum of the squares

if x = 4, the solution will be: y = 1^2+2^2+3^2+4^2=1+4+9+16 = 30.

mer än 3 år ago

Solved

Convert from Base 10 to base 5

Convert the input number from base 10 into base 5: for example: if a(in base 10)= 5 then a(in base 5)= 10

mer än 3 år ago

Solved

Tridiagonal matrix

Given vectors u and v, make a tri-diagonal symmetric matrix such that u is in the main diagonal and v is below and above diagona...

mer än 3 år ago