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 Dec14 comment Revolution plot with 2 variable It gave me exactly what I wanted, so I don't see why it had been downvoted (I should have answered to the answer you gave, I'm sorry). As I am far from understanding Mathematica, I cannot see a better alternative. Dec14 accepted Revolution plot with 2 variable Dec13 comment Revolution plot with 2 variable I understand the approach and it does seem to be more efficient, but I'm not quite sure how derivate the function the way you did if it gets more complex. For instance, 0==1/2 + x^2/2 + y^2/2 - x^2 Cos[(13 \[Pi])/64]^2 - 2 x Cos[(13 \[Pi])/64] Sin[(13 \[Pi])/64] - Sin[(13 \[Pi])/64]^2 is a simple hyperbola equation (which is what I'm working with right now). I can deriviate the equation by myself, but I don't understand how to do it the way you did. Dec13 awarded Supporter Dec13 comment Revolution plot with 2 variable Thanks, it does work! Except for the y after the equation, it's just what I was looking for. And I'll keep in mind how to solve the equation, it might get complicated later on... Dec13 comment Revolution plot with 2 variable Because it's not the same parabola, you could have one with a x*y term. Or an hyperbola, with both x^2 and y^2. Dec13 awarded Peer Pressure Dec13 asked Revolution plot with 2 variable Nov4 accepted Plot a 3D graph while changing the range of the parameter Nov4 revised Plot a 3D graph while changing the range of the parameter deleted 2 characters in body Nov4 comment Plot a 3D graph while changing the range of the parameter What I'm looking for is the 3D graph of the evolution of the surface between all of these lines. Nov4 awarded Editor Nov4 revised Plot a 3D graph while changing the range of the parameter edited title Nov4 asked Plot a 3D graph while changing the range of the parameter Nov4 awarded Student Nov3 awarded Scholar Nov3 accepted Plotting a dot product Nov3 comment Plotting a dot product Thanks! It does work. I'm new with Mathematica and still trying to figure out many things... Could you tell me if there a way also to have both the equation obtained and the graph in the same image? Nov3 asked Plotting a dot product