Want to make money? f(x)=x/3？ Just right? 5? Is there a solution? y=m√[ 1-(x-4)^2]？ With what? y=x/3？ The intersect. And then what? y=m√[ 1-(x-8)^2]？ With what? y=x/3？ Separated,

What is the discriminant of the problem assigned to the root of quadratic equation? .

(1) by? m√[ 1-(x-4)^2]=x/3？ Have to? 9m^2*[ 1-(x-4)^2]=x^2？ ,

Simplify it (9m^2+ 1)x^2-72m^2*x+ 135m^2=0？ ,

Discriminant = (-72m2) 2-4 (9m2+1) *135m2 > 0? ,

Simplify it 324m^2>； 540? , the solution? m & gt√(5/3)=√ 15/3? ;

(2) by? m√[ 1-(x-8)^2]=x/3？ Have to? 9m^2*[ 1-(x-8)^2]=x^2？ ,

Simplify it (9m^2+ 1)x^2- 144m^2*x+567m^2=0？ ,

Discriminant = (-144m2)-4 (9m2+1) * 567m2.

Simplify it 324m^2<； 2268? , the solution? 0 & ltm & lt√7? ,

Take the intersection of (1)(2) and get? m？ What is the value range? (√ 15/3,√7)。

Choice? b？ .