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Calculus
Problems - some ideas and approaches with Matlab
Calculus problems are a branch of mathematics focused on limits, functions, derivatives and integrals.
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This very broad topic constitutes a major part of modern education. It has two major branches, differential and integral calculus, which are related due to the fact that integrals are the anti-derivatives (so to speak).... We use Matlab to fastly experiment with some important concepts.
Sequences and Series
Sequences and series
are very related: a sequence of |
numbers
is a function defined on the set of positive integers (the numbers in
the sequence
are called terms)...
Infinite and Harmonic Series In this article we
are going to experiment on geometric
and harmonic series. We review geometric series, the alternating harmonic series, the Leibnitz formula to find pi and...
Factorials Factorials of positive integers n, are the product of all positive
integers less than or equal to n.
Factorials are denoted by n!...
Lucas Series The French mathematician, E. Lucas, found a sequence of numbers (named the Lucas series) similar to the sequence found in the Fibonacci numbers.
Derivative The derivative of a function f(x) at x = c is the slope of the tangent line to f at x = c. You can find the value of the derivative using the difference quotient, which is a formula...
Gradient In
our case, a numerical gradient is like having a 3D derivative. We get
partial derivatives along x, y and z axes, and that's our gradient.
It's convenient to follow the method shown to calculate derivatives...
Definite Integrals A numerical integration can be performed by a number of
algorithms that calculate the approximate value of definite integrals...
Trapezoidal Rule The
Trapezoidal Rule is a way to approximate area beneath a curve.
Instead of constructing rectangles, this method uses small trapezoids.
In effect, these trapezoids look the same as rectangles near their
bases, but different at the top...
Simpson's Rule
Another area-approximating tool is the Simpson’s Rule.
Geometrically, it creates parabolas to get closer to the
function we’re approximating. The formula is similar to the trapezoidal
rule, but you can only use an even number of subintervals...
Maclaurin Series Maclaurin series are
fast approximations of functions, and
they offer more accurate function approximations than just linear ones. You
have
to consider only one general formula and you can...
Taylor expansion Taylor series are
another type of fast approximations of functions and are very similar to Maclaurin's. You
have
to consider only one general formula and you can...
Sine / Cosine series The
sine and cosine functions are two of the basic functions in
trigonometry. In this article, we’re going to explore a number of ways
to calculate the sine series without actually using the sine (or
cosine) functions...
Fourier Analysis - intro This field began with the study of
the way periodic or general functions that might be represented by summations of
simpler trigonometric functions (sine
or cosine series). Fourier analysis has
many applications in science...
Fourier Series - (analysis cont.) Fourier series is an infinite sum of sines
used to solve special types of problems in electronics. The series
consists of an infinite sum of sines (and cosines) that repeats over
fixed intervals...
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