Directional Derivative & Graph


Please enter a function in the variables x and y, and the coordinates of a fixed point (x1,y1). Feel free to change any of the available plotting options.
f(x,y):   Fix point   Direction vector Options  
x range: to  a:  : v1:  

curve scale 

y range: to  b:  : v2:   vector thickness
Du f(a,b) = 
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The University of South Dakota, Department of Mathematics, USA. ©José D. Flores, PhD. e_mail: jflores@usd.edu