Determinants OP Malhotra Class-12 ISC Maths Solutions Ch-5. In this article you would learn about introduction of Determinants. Determinants Practice Problems / Questions with step by step Solutions / Answer. Visit official Website CISCE for detail information about ISC Board Class-12 Mathematics.
Determinants OP Malhotra Class-12 ISC Maths Solutions Ch-5
| Board | ISC |
| Publications | S Chand |
| Subject | Maths |
| Class | 12th |
| Chapter-5 | Determinants |
| Writer | OP Malhotra |
| Exe-5(A) | What is a Determinant ? |
Determinants Practice Problems / Questions with Solutions / Answer
OP Malhotra Class-12 ISC Maths Solutions Ch-5
Que-1: Evaluate the following determinants :
(i) …. .. ….. …. ……. (vi)
Sol:
Que-2: Prove that …………….=1
Sol: sin 10° cos80° + cos 10° sin 80°
= sin(10° + 80°) = sin 90° = 1
Que-3: If ………………. = 3, find the value of m.
Sol: Given
⇒ 15 – 4m = 3
⇒ 12 = 4 m
⇒ m = 3
Que-4: (i) Find the value of x, if ……….., (ii)………..
Sol: (i)
⇒ (x – 1) (x – 3) – x(x – 2) = 0
⇒ x² – 4x + 3 – x² + 2x = 0
⇒ – 2x + 3 = 0 ⇒ x = 32
(ii)
⇒ 12x + 14 = 32 – 42
⇒ 12x = – 10 – 14 = – 24
⇒ x = – 2
Que-5: Determine the value of k for which …………….. = 0
Sol: Given
⇒ k x 2k – 4 x k = 0
⇒ 2k² – 4k = 0
⇒ 2k(k – 2) = 0
⇒ k = 0, 2
–: End of Determinants OP Malhotra Class-12 ISC Maths Solutions Ch-5 Practice Problems :–
Return to :- OP Malhotra ISC Class-12 S Chand Publication Maths Solutions
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