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y = 3x + 6x2 + 10x3 + ....... হলে, দেখাও যে, x =13y -1y2. 42!y2+ 1.4.733.3!y3 - ... .... ...

Created: 1 year ago | Updated: 1 year ago

y=3x+6x2+10x3+... ... ... ... ...

1+y=1+3x+6x2+10x3+ ... =(1-x)-3

1+y-13=(1-x)-3×-13

1-x=(1+y)-13

1-x=1-13y+-13-13-12!y2+-13-13-1-13-23!y3+... 

অতএব, x=13y-132.42!y2+1.4.733.3!y3_.... (showed)

 

1 year ago

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AB=3x-4x2x-2xx<... td>0-x-xxx2x-2x2x5x-4x3x7x-5x

=x3-42-210-1-11 .x 12-225-437-5=x2100010001 =x2000x2000x2

অনুরূপভাবে, BA=x2000x2000x2 

অতএব, AB = BA

অতএব,  x2I1x2A =B-1 I B-1=B-1=Ax2=3x-4x2x-2x1x0-1x-1x1x 

অতএব, B-1=Ax2

 

 

1 year ago

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