-4+(-3)
=-7
since it’s two negatives , you’re just adding them
<span>"Find the value of the derivative (if it exists) at each indicated extremum. To solve this, apply derivatives in calculus.
f (x) = cos(πx/2)
the first derivative is the change at the indicated extremum
f'(x) = -</span>π/2sin(πx/2)
3. The number of Spanish students is 1.5 times the number of French students.
if (x - 5 ) is a factor of f(x ) then x = 5 is a root of f(x) and f(5) = 0
