" 9."d varepsilon44x^(2)-2x-8" Of "2" (s-46at the A the "1

If th term in the expansion of (2x^(2)-(1)/(x))^(12) is without x then r is equal to a.7 b.8 c.9d .

If x1,x2 varepsilon(0,(pi)/(2)) which one of the following expressions is correct?

If rth term in the expansion of (2x^2-1/x)^(12) is without x then r is equal to a. 7 b. 8 c. 9 d. 10

if x varepsilon R then the value of -7x^(2)+8x-9 (i) zero (ii) positive (iii) negative (iv) not determined

f(x)=max(sin x,cos x),x varepsilon R. Then number of critical points varepsilon(-2 pi,2 pi) is/are (i) 5( ii) 7( iii) 9 (iv) none of these

If x=9 is the chord of contact of the hyperbola x^(2)-y^(2)=9 then the equation of the corresponding pair of tangents is (A)9x^(2)-8y^(2)+18x-9=0(B)9x^(2)-8y^(2)-18x+9=0(C)9x^(2)-8y^(2)-18x-9=0(D)9x^(^^)2-8y^(^^)2+18x+9=0'

The area of the closed figure bounded by y=(x^2)/2-2x+2 and the tangents to it at (1,1/2)a n d(4,2) is 9/8s qdotu n i t s (b) 3/8s qdotu n i t s 3/2s qdotu n i t s (d) 9/4s qdotu n i t s

Let R be a relation on the set of natural numbers ,defined as R ={(x,y):x+2y=20, x,y varepsilon N} and x varepsilon {1,2,3,4,5} .Then ,the range of R is :

Let matrix A=[[x,y,-z1,2,31,1,2]] where x,y,z varepsilon N. If det.,(adj(adj.A))=2^(8)*(3^(4)) then the number of such matrices A is :