Math, asked by mjkin3092, 11 months ago

मान ज्ञात कीजिए

(ii)   \begin{bmatrix}  x2-x+1 & x-1   \\  x+1 & x+1  \end{bmatrix}

Answers

Answered by amitnrw
0

Given :    \begin{bmatrix}  x^2-x+1 & x-1   \\  x+1 & x+1  \end{bmatrix}

To find :  मान ज्ञात कीजिए

Solution :

A =  \begin{bmatrix}  x^2-x+1 & x-1   \\  x+1 & x+1  \end{bmatrix}

हमें पता है की

A =  \begin{bmatrix}  a & b \\  c & d \end{bmatrix}

Det A = | A |  = Δ  =  ad  - bc  

A =  \begin{bmatrix}  x^2-x+1 & x-1   \\  x+1 & x+1  \end{bmatrix}

a = x² -x  + 1

b = x - 1

c = x + 1

d = x + 1

Det A = | A |  = Δ  =  (x² -x  + 1)(x + 1)  - (x - 1)(x + 1)

=>  Det A = | A |  = Δ  =   (x + 1)(x² -x  + 1 -x + 1)

=> Det A = | A |  = Δ  =    (x + 1)(x² -2x + 2)

=> Det A = | A |  = Δ  =   x³ - x²   + 2

A =  \begin{bmatrix}  x^2-x+1 & x-1   \\  x+1 & x+1  \end{bmatrix}  मान = x³ - x²   + 2

और सीखें

"निम्नलिखित सारणिकों के मान ज्ञात कीजिए

(i)   -3 & -1 & 2  \\  0 & 0 & -1 \\ 3 & -5 & 0  

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मान ज्ञात कीजिए

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"मान ज्ञात कीजिए ।

  \begin{bmatrix}  2 & 4  \\  -5 & -1  \end{bmatrix}"

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