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-11x24-x2 dx এর মান নির্ণয় কর।

Created: 1 year ago | Updated: 1 year ago

ধরি, x = 2 sinθ dx =2 cosθ dθ

x = 1 হলে, θ = π6 ; x =-1 হলে, θ=-π6

-π6π6 4 sin2θ ×2 cos θ ×2 cos θ dθ

=-π6π6 16 sin2θ cos2θ dθ = 4 -π6π6 sin2 2θ dθ

=2-π6π6 (1 -cos 4θ) dθ =θ-sinθ4 -π6π6

=2π3-π432--32=2π3-32

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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