Class 12 Ex 4.2 Q6 Math | Determinants | Q6 Ex 4.2 Class 12 Math | Ex 4.2 Q6 Class 12 Math

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[hariomraghuwanshi]

sir eq=1 ko hi inter change karke hi eq=2 banake add kar de to bhi answer same ayega

[kazianas]

Step by step:
Row 1 ko c se multiply karo,
Row 2 ko b se multiply karo,
Row 3 ko a se multiply karo,
Or fir jo determinant ban kar aaye usmai
Row 2 mai R2 + R3 Function lagao.
Row 1 and 2 same aajayegi.
Thank

[yadav_ji_]

R1=r1+r2+r3
R2=r1+r2+r3
Arrange the value of a R1 or R2 then R1, R2 are identical and by property no. 2 value is 0
Tqqu

[Akshaykumar-ggfw]

Sir ham equation 1 ko inter change krke then dono ko add krke solve kr skte hain kya?

[kavyaanil]

Sir i have one query
Is ques me hum 1st and 2nd equation ko add kre to bhi ans aa

[Ayon-cmsj]

Sir pehle step me hi rows and columns interchange Karke add Kar Dene se ho Jaana

[basavarajbasavaraj]

Sir for the above question can we write bellow answer: the given matrix is a skew symmetric matrix therefore the value of determinant of skew symmetric matrix is 0

[chandanadeb]

Your video is so helpful for us. Thank you sir.

[rikash]

Any one noticed equation 1 and 3 is equal 😂😂😂😂

[mkriku]

*EASIEST METHOD:*
1) *R1→R1×R2*
2) *R1→R1× R3*
*THEN WE WILL GET THE FIRST ROW AS 0.*
*HENCE THE ENTIRE DETERMINANT WILL BECOME ZERO.*
*THANK U*

[Uk.]

Sir what is the defference between equations 1 and 3

[freeadvisor]

sir multiply each column by 1
ki jagah pe
multiply by 0 nai kar sakte
direct answer aa jaye ga

[athna]

multiply each column by 0 instead of -1🗿

[mysterio]

determinant ko toh add tbhi kar sakte hai jab unki do row ya column same ho par aapne jaise EQ. 3 and 4 ko add Kiya hai wo toh matrix mai hota hai

[lakshaymeghwal]

Equation 1ko interchange Karke eq2 se add Kare bhi to answer aasaktha hai

[ananyapalak]

Sir agar 1-2 krte toh bhi answer aajata?
Similarly 1=3 h toh aap pehla wala likhne ke baad bs uske rows and columns exchange krenge phir dono ko add krdenge toh bhi aayega answer ?

Please answer sir

[shael.m.a]

Sir equation 1 and 2 ko subtract kar sakte hai kya

[navyblueskiess]

2:31 sir how u multiplied the negative sign to all the rows, it should be multiplied with only one row or column.

[abhijitmandal]

Sir can we interchange eqn 1 n add both the equations?

[sardarshah]

Sir hm equation 1 ko 3rd property lagake solve ni kr skte ?