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1-1x24-x2dxএর মান নির্ণয় কর।

Created: 2 years ago | Updated: 2 years ago
Updated: 2 years ago
Answer :

ধরি, x 

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

2 years ago

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