Chapter 8 Notes

Example Homework Problem• Suppose that z varies jointly as u and v and inversely as w,and that z = 0.8 when u = 8, v = 6 and w = 5. Find z whenu = 3, v = 10 and w = 5• For all corresponding values of this variation:z1wu v111=zu22wv22• Therefore:( 0.8)( 5)()() 8 6=( z)( 5)()( 3 10)( 8)( 5)( 3)( 10)( 10)( 8)( 6)( 5)=z( 0.8)( 5)( 3)( 10)()()() 8 6 5=zz =12