Derive equation with a multiplier and constant

1. Oct 26, 2013

TMonkey

Hi there,

I'm trying to derive the following equation, but despite internet searching haven't been able to figure out what to do with the multiplier, D.

D * dθ/dz + k = C

I need to derive the equation and then plot the graph θ(y-axis) against z (x-axis).

Any help greatly appreciated,
thank you.

2. Oct 26, 2013

vanhees71

Deriving from what? It helps a lot to clearly state the problem not only to be able to get help from others but also to solve the problem yourself!

3. Oct 26, 2013

UltrafastPED

Derive the equation from what? Is it from raw data, or from a description of a property of something?

You would do better to look through your assignment and class notes rather than the internet! Or form a study group.

4. Oct 29, 2013

HallsofIvy

If by "derive the equation" you mean solve that equation for $\theta$ as a function of z just solve for $d\theta= [(C- k)/D]dz$. If C, k, and D are constants that gives $\theta= [(C- k)/D]z+ E$ where E is a "constant of integration".