# Dufferential equation-Plz

posted by
**Alicia** on
.

C = 15*pi*(2*D*h+(3/4)*D²) + L* (94.25*D*h+35.34*D^2)/(pi*D^2*h/4)

first dC/dD?

second d^2C/dD^2?

first dC/dh?

second d^2C/dh^2

posted by
**Alicia** on
.

C = 15*pi*(2*D*h+(3/4)*D²) + L* (94.25*D*h+35.34*D^2)/(pi*D^2*h/4)

first dC/dD?

second d^2C/dD^2?

first dC/dh?

second d^2C/dh^2