# Category Archives: Engineering Mathematics

## Z-test

Z-test is a statistical method to determine whether the distribution of the test statistics can be approximated by a normal distribution. It is the method… Read More »

## Levene’s test

Levene’s test is used to assess the equality of variance between two different samples. For every case, it calculates the absolute difference between the value… Read More »

## Alpha and Beta test

In the previous article, we discussed hypothesis testing which is the backbone of inferential statistics. We previously discussed the basic hypothesis testing including Null and… Read More »

## Solving Homogeneous Recurrence Equations Using Polynomial Reduction

A recurrence relation is an equation that recursively defines a sequence or multidimensional array of values, once one or more initial terms are given; each… Read More »

## Mathematics | Problems On Permutations | Set 1

Prerequisite – Permutation and Combination Formula’s Used : 1. P(n, r) = n! / (n-r)! 2. P(n, n) = n! Example-1 : How many 4-letter… Read More »

## Cosets in Mathematics

Coset is subset of mathematical group consisting of all the products obtained by multiplying fixed element of group by each of elements of given subgroup,… Read More »

## Normal and Principle Forms

Disjunctive Normal Forms (DNF) : A formula which is equivalent to a given formula and which consists of a sum of elementary products is called… Read More »

## Secant Method of Numerical analysis

Secant method is also a recursive method for finding the root for the polynomials by successive approximation. It’s similar to the Regular-falsi method but here… Read More »

## Difference between Descriptive and Inferential statistics

Statistics is a branch of mathematics dealing with the collection, analysis, interpretation, and presentation of masses of numerical data. It is basically a collection of… Read More »

## Trick to calculate determinant of a 3×3 matrix

Linear Algebra is one of the most important topics in Engineering Mathematics Gate syllabus. Finding determinant of a matrix is one of the most important… Read More »

## Sum of n terms of a sequence

If nth term of a sequence is given by Tn=an3+bn2+cn+d where a, b, c, d are constants then sum of n terms. Sn = a*Σ(n3)+b*Σ(n2)+c*Σ(n)+Σ(d)… Read More »

These are following important points about circle in geometry : Equation of circle having center at (0, 0) and radius r : x2+y2=r2 Equation of… Read More »

## Finding the LCM and HCF of decimal numbers

Finding the LCM and HCF are most frequently asked questions in any competitive exams. Finding LCM and HCF for natural numbers are taught in our… Read More »

## Remainder Fact For Number 9

“9 is special magic number in case of finding remainder.” Because if you want to find remainder of any number when divided by 9, just… Read More »

## Delimiters in LaTeX

The use of delimiters soon becomes important when dealing with anything but the most trivial equations. Without them, formulas can become ambiguous. Also, special types… Read More »