CBSE Class 12 - Maths - Introduction to Matrices Part -1 (Questions and Answers)(#class12Maths)(#matrices)(#eduvictors)

CBSE Class 12 - Maths - Introduction to Matrices (Questions and Answers)

Part-1

Q1: Name the mathematician, was the first person to introduce the concept of a matrix? Define matrix.

Answer: Arthur Cayley in 1857

A matrix is an ordered rectangular array of numbers or functions. The numbers or functions are called the elements or the entries of the matrix.

Q2: Give examples of domains where matrices based applications are widely used.

Answer: Matrices is one of the most important and powerful tools in mathematics which has found its way into various disciplines like Engineering, Economics, Statistics, Physics, Chemistry, Commerce etc.

Class 10 Maths Probability (Assignment) (#class10Maths)(#cbse2021)(#Probability)(#eduvictors)

Class 10 Maths Probability (Assignment)

Complete the following statements with suitable word(s).

1. Probability of an event E + Probability of the event ‘not E’ = _______ .

2. The probability of an event that cannot happen is ________ . Such an event is called ___________ .

3. The probability of an event that is certain to happen is ________ . Such an event is called ___________ .

Class 11 Economics - Introduction and Central Economic Problems (MCQs)(#class11Economics)(#eduvictors)(#cbsenotes)

 Class 11 Economics - Introduction and Central Economic Problems (MCQs)

Q1: The word ‘Economics’ originates from the ________ world ‘Oikonomia’

(a) Roman

(b) French

(c) Greek

(d) European

Q2: In Business economics ‘ends’ refers to- 

(a) Human wants

(b) Resources

(c) Both (a) and (b)

(d) none of these

CBSE Class 7 - Science - Soil (Worksheet)(#eduvictors)(#class7Science)

CBSE Class 7 - Science - Soil (Worksheet)

Image Credits: Tomáš Kebert & umimeto.org (wikimedia)

Fill in the blanks with suitable words.

1. Soil is formed by the breaking down of rocks, by the action of wind, water and climate, called __________.

2. The removal of land surface by water, wind or ice is known as ________.

3. ________ soil having organic matter and a good capacity to retain water are ideal sources for growing paddy.

Class 6 - Maths - Playing With Numbers (Assignment)(#class6Maths)(#eduvictors)

Class 6 - Maths - Playing With Numbers (Assignment)

Fill in the blanks with suitable word(s).

1. Numbers having more than two factors are called _____________ numbers.

2. A _______ of a number is an exact divisor of that number.

3. ______ is a factor of every number.

Class 8 - Maths - Cube Roots (Study Notes with Solved Examples)(#class8Maths)(#eduvictors)

Class 8 - Maths - Cube Roots 

Cube root is the inverse operation of a cube.

Symbol ∛ represents a cube-root.

e.g. $\sqrt[3]{8} = 2$,

$\sqrt[3]{216} = 6$

METHODS OF FINDING CUBE ROOT

There are two methods of finding Cube Root

1. Prime Factorisation 

2. Estimation Method

Biology Quiz - 6 (#NEET)(#premedical)(#AIPMT)(#class12Biology)(#eduvictors)(#class11Biology)(#class12Biology)

Biology Quiz - 6 

Q1: Which of the following statements is wrong for viroids?

(a) They cause infections.

(b) Their RNA is of high molecular weight.

(c) They lack a protein coat.

(d) They are smaller than viruses.

Class 9 Maths - Important Identities (#class9Maths)(#eduvictors)

Class 9 Maths - Important Identities

(a+b)² = a² + 2ab+ b²

(a–b)² = a² –2ab + b²

a² – b² = (a+b)(a–b)

CBSE Class 10 - History - The Rise Of Nationalism in Europe ( Questions - Answers)(#class10SocialScience)(#class10History)(#eduvictors)(#cbsenotes)

CBSE Class 10 - History -
The Rise Of Nationalism in Europe
( Questions - Answers)

Q1: Define nationalism.

Answer: The expression of Nationalism was brought about by the French revolution in 1789. Nationalism developed a sense of common identity and shared past or descent. Political movements and struggles by the leaders led to the current commonness. It emerged as a force to unify people which later led to the emergence of the nation-state.

Q2: Who was Frederic Sorrieu? 

Answer: He was a French artist famous for a series of four prints prepared in 1848 that visualised the dream of a world consisting of ‘Democratic and Social Republics’.

CBSE Class 11 Maths - Relations - Domain, Range and Co-Domain (#class11Maths)(#eduvictors)(#cbse2021)

CBSE Class 11 Maths - Relations - Domain, Range and Co-Domain

RELATION 

Let A and B be two nonempty sets. Then, a relation R from A to B is a subset of (A × B).

Thus, R is a relation from A to B ⇔ R ⊆ (A × B).

If (a, b) ∈ R then we say that ‘a is related to b‘ and we write, a R b. 

If (a, b) ∉ R then ‘a is not related to b‘ and we write, $a \not \mathrel{R} b$.

Q1: Let A = {-1, 2, 4} and B = {1, 3}. Show A × B as arrow diagram.