tooollooonng dongggg

kalo gqk salah begini kurva yha

y = √(2x) - 3 di titik (2, -1)
y = √2. x^1/2 - 3
Gradien : m = y'
= 1/2 √2 x^-1/2
= 1/2 . √2 . 1/√x ====> (2, -1) maka x = 2
= 1/2 . √2 . 1/√2
= 1/2