Find X if 2X+3Y=[2340]and 3X+2Y=[7−2−15]
⎡⎣−25125115−3⎤⎦
⎡⎣25−125−1153⎤⎦
⎡⎣25135145−2⎤⎦
⎡⎣−25−135−1452⎤⎦
2X+3Y=[2340]........(i)3X+2Y=[2−2−15]........(ii)(i)×2⇒4X+6Y=[4680]........(iii)(ii)×3⇒9X+6Y=[6−6−315]........(iv)(iv)−(iii)⇒5X=[2−12−1115]x=⎡⎣25−125−1153⎤⎦
If A=[1tan x−tan x1],ATA−1= ___
If A=[1021] and B=[34−52] Find AB