EXERCISE 13.2 Q NO.4 AND 5

If [(2+x,3,4),(1,-1,2),(x,1,-5)] is a singular matrix then x is (A) 13/25 (B) -25/13 (C) 5/13 (D) 25/13

Two circles, each having radius 4, have a common tangent given by 3x+2y-6=0 at (2, 0) . Then their centres are : (A) (2+ 5/sqrt(13), 8/sqrt(13)), (2- 5/sqrt(13) , (-8)/sqrt(13)) (B) (2+ 12/sqrt(13), 8/sqrt(13)) , (2- 12/sqrt(13), (-8)/sqrt(13)) (C) (2, 3), (4, 5) (D) none of these

Divide 13.2 in the ratio 4:7.

Exercise 2. Let R (1, 3), (2, 5), (3, 7), (4, 9), (5, 11) be a relation in the set A ={1, 2, 3, 4 ,5 }Find the domain and range of R

Class 12 ncert maths solution chapter vector algebra exercise 10.2 Qno.4,5

Let P(A)=7/(13), P(B)=9/(13) and P(AnnB)=4/(13) . Then P( A //B)= 5//9 b. 4//9 c. 4//13 d. 6//13

Show that 1 + 1/2.(3/5) + (1.3)/(2.4) (3/5)^2 + (1.3.5)/(2.4.6) (3/5)^3 + …… = sqrt([5/2])

Show that + 1/4 + (1.3)/(4.8) + (1.3.5)/(4.8.12) + …….= sqrt2

4.4 gms of a hydrocarbon on complete combustion produced 13.2 gms of CO_(2) and 7.2 gms of H_(2)O . What is the hydrocarbon?

Identify, in the following expressions, terms which are not constants. Give their numerical coefficients: xy+4, 13-y^2, 13-y+5y^2, 4p^2 q-3pq^2+5