The rate of growth of mass of a tumor, m, with respect to time t, is inversely proportional to the square of the mass. The differential equation that best describes this relationship is which of the following?

Question

anonymous · Answer

I thought it was just 1/m^2 but in the answer choices I see a k everywhere. 
What does the k mean

perl · Answer

k stands for a constant

perl · Answer

the differential equation is 
dy/dt = k/m^2

anonymous · Answer

So I just have to multiply k?

perl · Answer

correct

perl · Answer

in general if 'y is proportional to x', then y = k*x

anonymous · Answer

Oh i see. when you derive both sides the k stays. I got it thanks