Question

How many real solution does the equation x?+ 14x5 +16x3 + 30x-560 = 0 have? [A (A) 1 (B)3 (C) 5 (D)7

JEE/Engineering Exams

Maths

Solution

4.0 (1 ratings)

f(n) = +14 % +1Gn't sou-5600 f'(n) = 70 + 70 nt + 48 n +30 70 It is strictly increasing functim when n o ; I(M) - a nosno; of m) - it cuts & anis at enactly one point It has only one real root one