Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #1 20130823 06:34:39
Rate of change problemThe volume of an empty container is 15 m³. If water is poured into the container at a rate of 2t + 2 m³ per minute where t is the time. What is the time needed to fill the container? #2 20130823 06:41:40
Re: Rate of change problemhi AlbertMThomas
Think about what that rate represents: At the start t = 0 and V = 0. At the end V = 15 at (say) t = T So integrate to get V in terms of t; put V = 15 (the constant of integration will come from t = V = 0) and solve for T Bob You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei 