A chemical reaction produces heat

MATHEMATICS · Subjective · AP · Calculus AB · Analytical Applications of Differentiation · Analytical Applications of Differentiation

Problem

A chemical reaction produces heat, and the rate of heat production

H'(t)

(in joules per minute) satisfies:

H'(t)>0

for

0<t<4

H'(4)=0

, and

H'(t)<0

for

t>4

. What practical conclusion can be drawn about the temperature of the reaction mixture at

t=4

minutes?