# Definition

Updated On: 24-3-2020

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A polymer of prop-

2

enenitrile is called:

Two objects are placed at some distance, If its masses becomes two times and distance between them becomes half then value of new gravitational force will be :

Frog Spawn Alga is

Two spheres A and B of equal radii R, each are uniformly dense with densities

2 rho

and rho respectively are placed as shown in figure.The initial acceleration of particle placed at point P due to gravity of both the spheres will be (P is just above the surface of sphere B).

Two spheres A and B of equal radii R, each are uniformly dense with densities

2 rho

and rho respectively are placed as shown in figure.The initial acceleration of particle placed at point P due to gravity of both the spheres will be (P is just above the surface of sphere B).

Two spheres A and B of equal radii R, each are uniformly dense with densities

2 rho

and rho respectively are placed as shown in figure.The initial acceleration of particle placed at point P due to gravity of both the spheres will be (P is just above the surface of sphere B).

Which one is group of warm blooded animals?<br>(a) Fishes<br> (b) Amphibians<br> (c) Reptiles<br> (d) Birds

Write the balanced equations for extraction of silver from glance by cyanide process.

Four species are listed below: <br> (

i

)

HCO_(3)^(-)

<br> (

ii

)

H_(3)O^(+)

<br> (

iii

)

HSO_(4)^(-)

<br> (

iv

)

HSO_(3)F

<br> Which one of the following is the correct sequence of their acid strength?

Four species are listed below: <br> (

i

)

HCO_(3)^(-)

<br> (

ii

)

H_(3)O^(+)

<br> (

iii

)

HSO_(4)^(-)

<br> (

iv

)

HSO_(3)F

<br> Which one of the following is the correct sequence of their acid strength?

FAQs on Determinants

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Definition and example

Definition

Let A be a square matrix of order n; then the sum of the product of elements of any row (column) with their cofactors is always equal to

|A|

Let A be a square matrix of order n; then the sum of the product of elements of any row (column) with the cofactors of the corresponding elements of some other row (column) is 0.

Let A be a square matrix of order n then

|A| = |A^T|

Let

A=[a_(ij)]

be a square matrix of order

n>=2

and let B be a matrix obtained from A by interchanging any two rows (columns) of A then

|B|=-|A|

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