# Mean#!#Median#!#Mode#!#NCERT Ex 14.4

Updated On: 16-10-2021

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Prove:

\ |(a, b, c),( a-b,b-c,c-a),( b+c,c+a, a+b)|=a^3+b^3+c^3-3a b c

If O be the origin and the coordinates of P be

(1," "2," "" "3)

, then find the equation of the plane passing through P and perpendicular to OP.

The main reaction occuring in blast furnace during the extraction of iron form haematite is

The number of integers satisfying the equation

|x|+|(4-x^(2))/(x)|=|(4)/(x)|

is

Given

sum((P_(1))/(P_(0))xx100)=611.6

and Commodities are A,B,C,D and E then index number equal to

Given

sum((P_(1))/(P_(0))xx100)=611.6

and Commodities are A,B,C,D and E then index number equal to

In a coil of self-inuctance

0.5

henry, the current varies at a constant rate from zero to

10

amperes in

2

seconds. The e.m.f. generated in the coil is

What is smog? How is classical smog different from photochemical smogs?

Lt_(x rarr 0) (tan3x)/(sin 2x)

is equal to

Lt_(x rarr 0) (tan3x)/(sin 2x)

is equal to

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