Answer:
x = -pi/2
Step-by-step explanation:
hello :
f(x)=sin x x⋲(-2pi,0)
the derivate for f is : f'(x) = cosx
f(x) achieve a minimum when : f'(x) =0
cosx = 0 genral solution is :
x = pi/2 +kpi .. k in Z
but : x⋲(-2pi,0) so : x = -pi/2.....(k = -1)
The unit rate is about $12per fluid ounce
The answer is she lost 9 matches