Question

Y=X平方-5X+6(X≤0)的反函数是多少啊

Answer 1

Y+0.25=(X-2.5)^2

X-2.5=+ - (Y+0.25)^0.5

X≤0 => X=2.5-(Y+0.25)^0.5

=> 反函数：Y=2.5-(Y+0.25)^0.5(括号开根号）（X>=6)