1800-150-456-789
FlagBACK
Flag Vectors> question is written in this pic with my s...
question mark

question is written in this pic with my solution.. however my ans doesnt match with the correct answer.. where am I gonig wrong??

muskan , 5 Years ago
Grade 12
anser 2 Answers
Aditya Gupta

Last Activity: 5 Years ago

Dear muskan, your very first step itself is wrong.
Note that the only Valid row/column operations which leave the value of a determinant unchanged are of the form:
Ri --- Ri + mRj + nRk where m and n are constants.
Or Ci --- Ci + mCj + nCk
Since you have written R2 --- 2R2 - R1- R3, it is wrong because of the '2' in front of the row on which row operation is being applied, namely R2. 

Vikas TU

Last Activity: 4 Years ago

Dear student 
Please ask single question in a thread , 
It will be easier for us to ans. 
Good Luck 
Cheers 

Provide a better Answer & Earn Cool Goodies

star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Other Related Questions on vectors

question mark
A body is rotating with an angular velocity of 2radians per second about the line joining (1, 2,3) and (2, 3,5) find the velocity of the particle of the body which is momentarily at (3, 5,6) 
 
vectors
0 Answer Available

Last Activity: 2 Years ago

question mark
Show that: vectorPQ+vectorPR+ vectorPS +vectorTP+vectorUP = 4PQ
Vector
vectors
0 Answer Available

Last Activity: 3 Years ago

question mark
Given that A×(B×C) = (A.C)B - ( A.B)C , deduce that (A×B)×C = (A.C)B - (B.C)A
vectors
0 Answer Available

Last Activity: 3 Years ago

question mark
the mean of 30 observations was 17 with sd2. later it was found that two of the observations were incorrect, which were recorded as 19vand 21.find the correct sd if the incorrect values are deleted and correct values 22 and 15 are included
vectors
0 Answer Available

Last Activity: 3 Years ago

question mark
Find the component of 2i +3j +k in the direction of 3i-j 
 
vectors
1 Answer Available

Last Activity: 3 Years ago