Question

you are Amit Amita Naik the secretary e of co-curricular committee of Saint Peter's Higher Secondary School Colva the committee is organising a talk ok on time management for the students of the school.​

Answer 1

Answer:

hi good evening

hi good evening

Answer 2

Answer:

Let A=

 is a singular matrix

So, detA=0

So, By row transformantion,

r 1  →r

1​ −r

2 and r

3 →r 3​ −r 2

detA=   03

x−0​  −xx+2−x

By operation of matrix,

detA=−x(−3x−x  −2x)−x(+x)

detA=5x 2+3x −x 2

So, detA=4x 2 +x

3 =0x 2 (4+x)=0

x=0 and x=−4

Given xϵ[−4,−1]

So, x=−4 in only valid value,

So, only one value of x in [-4,-1]

Explanation: