Displaying ∂u/∂t but only get ∂u() and displaying 2nd order ode

09132023, 05:14 AM
Post: #1




Displaying ∂u/∂t but only get ∂u() and displaying 2nd order ode
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 

09132023, 12:48 PM
Post: #2




RE: Displaying ∂u/∂t but only get ∂u() and displaying 2nd order ode
Your 'Entry' has changed to Algebraic.
So set Entry:=0, or use the Home Settings to change to 'Textbook' or RPN 

09132023, 01:10 PM
(This post was last modified: 09132023 01:12 PM by Anthony The Koala.)
Post: #3




RE: Displaying ∂u/∂t but only get ∂u() and displaying 2nd order ode
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 

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