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যদি x+iy3=p+iq হয়, তবে দেখাও যে,4p2-q2=xp+yq

Created: 1 year ago | Updated: 1 year ago

x+iy3=p+iq

x+iy=p3+3iqp2+3piq2+i3q3

    =p3-3pq2+i3p2q-q3

x=p3-3pq2

y=3p2q-q3

R.S=xp+yq=p3-3pq2p+3p2q-p3q

=p2-3q2+3p2-q2=4p2-q2=L.SProved

qp=-qp+qp=0

L.S=R.S Proved

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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