`| & a |=3,| & b |=4,"and"| & a + & b |=5,"t h e n"| & a - & b |` If la I-3,i-4, and la +1-5, then la -l is equal to

If a and b are real and ( i ^(4) + 3i ) a + ( i -1) b + 5i ^(3) = 0, find a and b.

In triangle A B C , if sinAcosB=1/4 and 3t a n A=t a n B ,t h e ncot^2A is equal to

If A=[5a -b 3 2] and A (adj A)=A A^T , then 5a+b is equal to: (1) -1 (2) 5 (3) 4 (4) 13

4) (xa) 4m (xa) l) h (ha la tbya-b)

If a and b are real and ( i^4 + 3i) a + (i -1) b + 5 i^3 = 0, find a and b

If A=[5a-b3 2] and A adj A=AA^T , then 5a+b is equal to: (1) -1 (2) 5 (3) 4 (4) 13

The figure shows the variation of photocurrent with anode potential for a photosensitve surface for three different radiations. Let l_a, l_b and l_c be the curves a, b and c, respectively (a) f_a = f_b and l_a != l_b (b) f_a = f_c and l_a = l_c (c ) f_a = f_b and l_a = l_b (d) f_b = f_c and l_b = l_c

The figure shows the variation of photocurrent with anode potential for a photosensitve surface for three different radiations. Let l_a, l_b and l_c be the curves a, b and c, respectively (a) f_a = f_b and l_a != l_b (b) f_a = f_c and l_a = l_c (c ) f_a = f_b and l_a = l_b (d) f_b = f_c and l_b = l_c

The scalars la n dm such that l vec a+m vec b= vec c ,w h e r e vec a , vec ba n d vec c are given vectors, are equal to