Recent content by syu111111

See the following example. I think that Δ(Δx)/Δ(Δy) does not exist in mathematics because it doesnot have any physical meaning although you can calculate it. x y x*y x^2 y^2 x-4 y-6 x*y x^2 y^2 x-VarX y-VarY x*y x^2 y^2 1 8 8 1 64 -3 2 -6 9 4 -1 4 -4 1 16 2 13 26 4 169 -2 7 -14 4 49 -2 7...

Sorry. I should say: I mean that Δ(Δx)/Δ(Δy) does not have any physics or mathematical meaning. Do you agree? If not, can you tell me what is the meaning of Δ(Δx)/Δ(Δy)? Sure, you can do any calculation as you want.

I mean that Δ(Δx)/Δ(Δy) does have any physics or mathematical meaning. Do you agree? If not, can you tell me what is the meaning of Δ(Δx)/Δ(Δy)? Sure, you can do any calculation as you want.

This means that Δ(Δx)/Δ(Δy) does not exist in mathematics. Are you agreeing? Thanks a lot.

if you want to calculate the acceleration, you need calculate like (Δ(Δx/Δt)/Δt but not Δ(Δx)/Δ(Δt). Am I right? Thanks a lot.

Does Δ(Δx)/Δ(Δy) exist in mathematics and physics?

Does (Δ(Δx))/(Δ(Δy)) exist in both mathematics and physics? Thanks a lot