Find $\frac{d y}{d x}$ At the Given Point $2 x y-x^{2}=1$ ; (1,1)
A) 1
B) -1
C)

Multiple Choice

Find $\frac{d y}{d x}$ at the given point.
- $2 x y-x^{2}=1$ ; (1,1)

A) 1
B) -1
C) $\frac{1}{2}$
D) 0