Displaying ∂u/∂t but only get ∂u() and displaying 2nd order ode - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html) +--- Forum: HP Prime (/forum-5.html) +--- Thread: Displaying ∂u/∂t but only get ∂u() and displaying 2nd order ode (/thread-20494.html) Displaying ∂u/∂t but only get ∂u() and displaying 2nd order ode - Anthony The Koala - 09-13-2023 05:14 AM 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 RE: Displaying ∂u/∂t but only get ∂u() and displaying 2nd order ode - gehakte_bits - 09-13-2023 12:48 PM Your 'Entry' has changed to Algebraic. So set Entry:=0, or use the Home Settings to change to 'Textbook' or RPN RE: Displaying ∂u/∂t but only get ∂u() and displaying 2nd order ode - Anthony The Koala - 09-13-2023 01:10 PM 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