Advertisements
Advertisements
प्रश्न
If the value of determinant `|[m,2],[-5,7]|`is 31, find the value of m
उत्तर
`|[m,2],[-5,7]|=31`
∴(m × 7) – (–5 × 2) = 31
∴7m – (–10) = 31
∴7m + 10 = 31
∴7m = 21
∴m = 3
APPEARS IN
संबंधित प्रश्न
Choose correct alternative for the following question.
To draw graph of 4x + 5y = 19, Find y when x = 1.
Find the value of `|(5,3),(-7,-4)|`.
Choose correct alternative for the following question.
To solve x + y = 3; 3x – 2y – 4 = 0 by determinant method find D.
Choose correct alternative for the following question.
ax + by = c and mx + ny = d and an ≠ bm then these simultaneous equations have -
Find the value of the following determinant.
Find the value of the following determinant.
`|(5, -2), (-3, 1)|`
Find the value of the determinant:
`[(7/3, 5/3),(3/2, 1/2)]`
For equations 5x + 3y + 11 = 0 and 2x + 4y = −10 find D.
If Dx = 24 and x = – 3, then find the value of D
Solve the following to find the value of following determinant.
`|(3, -2),(4, 5)| = 3 xx square - square xx 4 = square + 8 = square`
Find the value of `|(5, 2),(0, -1)|`
For the equations y + 2x = 19 and 2x – 3y = − 3, find the value of D.
Using the determinants given below form two linear equations and solve them.
D = `|(5, 7),(2, -3)|`, Dy = `|(5, 4),(2, -10)|`
Form the simultaneous linear equations using the determinants
D = `|(4, -3),(2, 5)|`, Dx = `|(5, -3),(9, 5)|`, Dy = `|(4, 5),(2, 9)|`
Complete the activity to find the value of the determinant.
Activity: `|(2sqrt3, 9),(2, 3sqrt(3))| = 2sqrt(3) xx square - 9 xx square`
= `square` – 18
= `square`
Find the value of determinant.
`|(5/2, 11/3),(3/8, 17/12)|`
