1. Determinantni hisoblang

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Bog'liq
matrix

Variant 20

1. Determinantni hisoblang:

→

= 2×4×4 + (-1)×(-2)×3 + (-1)×3×(-2) - 3×4×(-1) – (-2)×(-2)×2 – 4×3×(-1) = 60

b)

A₁₁=4

=8; A₁₂=-2×

=0; A₁₃=

=0; A₁₄= -

=-6

A₁₁+ A₁₂+ A₁₃+ A₁₄= 8 + 0 + 0 – 6 = 2

→ A₁₁=

=69; A₁₂=-2×

=34; A₁₃=4×

=-84; A₁₄=-7

=-77

A₁₁+ A₁₂+ A₁₃+ A₁₄= 69 + 34 – 84 -77= -58

va B=

yordamida quyidagilarni toping:

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