HP Forums

Full Version: Displaying ∂u/∂t but only get ∂u() and displaying 2nd order ode
You're currently viewing a stripped down version of our content. View the full version with proper formatting.
Thank you for your time.
Background information
Using the top row button, 3rd from the left one can select a set of templates such as:numerator/denominator a number raised to a power, as well as ∂u/∂t - the u and t are squares you inset in the squares.

Before I have been able to display in the home screen ∂u/∂t

I want to display

∂u/∂t

BUT now only able to display

∂()

How do I display ∂u/∂t?

How do I display ∂²u/∂x²

Thank you
Anthony, Sydney
Your 'Entry' has changed to Algebraic.
So set Entry:=0, or use the Home Settings to change to 'Textbook' or RPN
It is inexplicable but I managed to be able to express the numerator and demominator of a partial derivative.

Nevertheless, if there is a method to get a numerator and denominator such as
∂u/∂x instead of ∂() I would be happy.

I managed to get a double derivative such as ∂²u/∂x²
Example
Suppose we have a 2nd order ode of
y"+3*y'=0
A solution is:
y = C1 + C2*e^(-3x)

In the prime:
desolve(∂(∂u/∂x)∂x+3*∂u/∂x=0,x,y)
G_0*e^(-3x) + G_1

To achieve ∂(∂u/∂x)∂x
1. Press the top row, third button from the left select ∂ /∂.
2. On the numerator of ∂ /∂ place ∂u/∂x. On the denominator of ∂ /∂ place an x to finally make it
∂(∂u/∂x)∂x

Thank you
Anthony, Sydney
Reference URL's