311. Find the 5th term from the end in the expansion of (x3/2 - 2/x2)9
-252 x2
312. The coefficient of x-15 in the expansion of ( 3x2 -a/3x3) is
-40/27 a7
313. Find the 5th term from the end in the expansion of (x3/2 - 2/x2)9
314. Find the number of integral solutions of equation x + y + z + t = 29, x > 0 , y > 0 < z > 0 and t > 0
315. Is 3x -4y +5z =6
316. Find P-1 , if it exist , given P = 10 -2
-5 1
P-1 does not exist
317. The equation x +ky +3z = 0 posses a non trivial solution for k if
2x +ky -2z =0
2x +3y -4z =0
318. Solve 2x + y +z =7 using Cramer’s rule
3x –y –z =-2
x +2y -3z =-4