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# Second Derivatives - Help.

Posted 9 years ago
 Hello, I bought the app you for AppStore, I am a customer from Brazil. I could not solve second derivative questions, could you help me? I would like to find the derivatives of a function in shapes: X, Y, XX, XY, YX, YY. Example: F (X, Y) = e ^ (2-x) / Y ^ 2 F (x) = F (y) = F (xx) = F (xy) = F (yx) = F (yy) = Can you explain me how to write these formulas in the application? Thanks !!
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Posted 9 years ago
 Hello,and easy extension would be In[31]:= f[x_, y_] := e^(2 - x)/y^2 Table[Derivative[i, j][f][x, y], {i, 0, 2}, {j, 0, 2}] Out[32]= {{e^(2 - x)/y^2, -((2 e^(2 - x))/y^3), (6 e^(2 - x))/ y^4}, {-((e^(2 - x) Log[e])/y^2), (2 e^(2 - x) Log[e])/ y^3, -((6 e^(2 - x) Log[e])/y^4)}, {(e^(2 - x) Log[e]^2)/ y^2, -((2 e^(2 - x) Log[e]^2)/y^3), (6 e^(2 - x) Log[e]^2)/y^4}} 
Posted 9 years ago
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