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ICSE Class 10 Answered

A=open square brackets table row 6 5 row 5 6 end table close square brackets  B=?  C=open square brackets table row 11 0 row 0 11 end table close square brackets  Given: AxB=C Find: (i) Order of matrix B (ii) Matrix B
Asked by ZUBIN BHOT | 22 Nov, 2018, 03:08: PM
answered-by-expert Expert Answer
begin mathsize 16px style AB equals straight C
open square brackets table row 6 5 row 5 6 end table close square brackets straight B equals open square brackets table row 11 0 row 0 11 end table close square brackets
Order space of space matrix space should space be space 2 cross times 2.
open square brackets table row 6 5 row 5 6 end table close square brackets open square brackets table row straight a straight b row straight c straight d end table close square brackets equals open square brackets table row 11 0 row 0 11 end table close square brackets
open square brackets table row cell 6 straight a plus 5 straight c end cell cell 6 straight b plus 5 straight d end cell row cell 5 straight a plus 6 straight c end cell cell 5 straight b plus 6 straight d end cell end table close square brackets equals open square brackets table row 11 0 row 0 11 end table close square brackets
6 straight a plus 5 straight c equals 11
5 straight a plus 6 straight c equals 0
6 straight b plus 5 straight d equals 0
5 straight b plus 6 straight d equals 11
Solve space simultaneous space equation space to space get space the space values space of space straight a comma space straight b comma space straight c space and space straight d.
straight c equals negative 5 comma space straight a equals 6 comma space straight d equals 6 comma space straight b equals negative 5
straight B equals open square brackets table row straight a straight b row straight c straight d end table close square brackets equals open square brackets table row 6 cell negative 5 end cell row cell negative 5 end cell 6 end table close square brackets end style
Answered by Sneha shidid | 23 Nov, 2018, 10:57: AM

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