With the graphing calculator SUM command, nd the magnitude of the given vector. Also, nd the direction angle to the nearest degree.

S343 Section 1.1 Notes- Types of Differential Equations; Exponential Growth/Decay 8-23-16 Exponential Growth and Decay o Rate of change- proportional to amount of “stuff” o Ex. Mouse population growth rate = = = 0.5 mice/month (decay rate) Assume owls eat mice at rate of 15 mice/day Let = number of mice at time Rate of change of mouse population is = 0.5 − 450 450 comes from 15 mice/day multiplied by assumed 30 days in a month (made units of rates match)