Parallel Plate Microfluidics velocity problem

How do I graph this equation of y vs. u(y,0) for a parallel plate problem

P = 10;

L = 0.02;

h = 30*10^-6;

u = 0.001;

%% Equation: u(y,0) = P/(2*u*L)*(y^2-h^2);

fplot(@(y) P/(2*u*L)*(y^2-h^2), [-1.5*10^-4 1.5*10^-4])

The resulting graph is supposed to return a straight line according to the answer solution guide, I can only get it to return a parabolic graaph

Answer 1

[Gaurav Garg]

Hi,

Though you wish to plot a straight line, you have plotted (y^2) which means you are supposed to get a parabolic graph.