প্যারাবোলার দুটি পারস্পরিক লম্ব স্পর্শক y^2=4a x\nP_1a n dP_2\n অক্ষের সাথে মিলিত হয়। যদি...

If ^nP_4=12xx ^nP_2 , find n.

nP_ (4): ^ (n) P_ (5) = 1: 2 then n =

If quad nP_(3):^(n)P_(2)=3:1, then n is equal to

Let vectors vec a , vec b , vec c ,a n d vec d be such that ( vec axx vec b)xx( vec cxx vec d)=0. Let P_1a n dP_2 be planes determined by the pair of vectors vec a , vec b ,a n d vec c , vec d , respectively. Then the angle between P_1a n dP_2 is a.0 b. pi//4 c. pi//3 d. pi//2

If X = {4 ^(n)-2n-1: n in N} and Y={9(n -1) : n in N}, then Xnn Y=

If quad simquad nP_(4):^(n)P_(5)=1:2 then prove that n=6

x^(2n-1)+y^(2n-1) is divisible by x+y

If x + y = 1, show that D ^ (n) (x ^ (n) y ^ (n)) = n! [Y ^ (n) - (nC_ (1)) ^ (2) y ^ (n -1) x + (nC_ (2)) ^ (2) y ^ (n-2) x ^ (2) + ...... + (- 1) ^ (n) x ^ (n)]

If n in N,x^(2n-1)+y^(2n-1) is divisible by x+y if n is