Tolong yang tau dijawab ya.. trimakasihh banyakk.

x^1/2 + y^1/2 = a^1/2
y^1/2 = a^1/2 - x^1/2 ==> kedua ruas dikuadratkan
(y^1/2)^2 = (a^1/2 - x^1/2)^2
y = a - 2a^(1/2)x^1/2 + x

dy/dx = 0 - 1/2 . 2a^(1/2)x^(-1/2) + 1
dy/dx = -a^(1/2)x^(-1/2) + 1

(d^2.y)/(dx^2) = 1/2 a^1/2 . x^(-3/2)
= (1/2) x^(-3/2) . a^(1/2)

^ = pangkat
dy/dx = y' = turunan pertama dari y
(d^2.y)/(dx^2) = y" = turunan kedua dari y