यदि फलन `f(x) = x^(4) + kx^(2) - 2, x = 1` पर निम्निष्ठ है तो k का मान ज्ञात कीजिये ।

Answer

`-2`

Explanation

`y = x^(4) + Kx^(2) - 2`
` rArr (dy)/(dx) = 4x^(3) + 2 Kx = 4 + 2K, x = 1` पर
` (dy)/(dx) = 0 rArr 2K + 4 = 0 rArr K = - 2`