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diff-plot3d
plot3d([f,fx,fy,[x,0,1],[y,0,1]]);

f:x^2+y^3;

fx:diff(f,x);

fy:diff(f,y);

Calculate

diff-plot3d-solve
plot3d (ECH, [T,273,323], [pH,8,13]);

k1(T):=10^(7.176-3.85...

k2(T):=10^(9.942-4.05...

OH:10^(pH-OH);

Calculate

diff-plot3d-sqrt
plot3d(Z(x,y),[x,-1,1],[y,-1,1]);

f(x,y):=x^2-y^2;

a(x,y):=diff(f(x,y),x);

b(x,y):=diff(f(x,y),y);

Calculate

diff-plot3d
plot3d(f, [x, 0, 5], [y, 0, 5]);

f(x, y) := 4 - x^2 - ...

diff(f(x, y), x);

diff(f(x, y), y);

Calculate

diff-plot3d
plot3d(f(x, y), [x, 0, 5], [y, 0, 5]);

f(x, y) := 4 - x^2 - ...

diff(f(x, y), x);

diff(f(x, y), y);

Calculate

diff-plot3d
plot3d([f(x,y), dfx(x, y), dfy(x, y), [x, -100,100],[y, -100,100]]);

f(x,y) := x*x+3*y;

dfx(f, x) := diff(f, x);

dfy(f, y) := diff(f, y);

Calculate

diff-plot3d
plot3d(f(x, y), [x, 0, 5], [y, 0, 5]);

f(x, y) := 4 - x^2 - ...

diff(f(x, y), x);

diff(f(x, y), y);

Calculate

diff-plot3d-solve
plot3d([10-x^2-y^2,1, 6,9,[x,-5,5],[y,-5,5]]);

f(x):=4*x^3-5*x^2-8*x...

solve(diff(f(x),x)=0,x);

plot3d([10-x^2-y^2,1,...

Calculate

diff-plot3d
 	plot3d(f, [x,0,1], [y,0,1]);

f:x^2+y^3;

diff(f,x);

diff(f,y);

Calculate

diff-plot3d
 	plot3d(f, [x,0,1], [y,0,1]);

f:x^2+y^3;

diff(f,x);

diff(f,y);

Calculate

[diff,plot3d]

Run Example
(%i1)f:x^2+y^3;
                                     3    2
(%o1)                               y  + x
(%i2) diff(f,x);
(%o2)                                 2 x
(%i3) diff(f,y);
                                        2
(%o3)                                3 y
(%i4) diff (f);
                              2
(%o4)                      3 y  del(y) + 2 x del(x)
(%i5)  	plot3d(f, [x,0,1], [y,0,1]);
plot 	plot3d(f, [x,0,1], [y,0,1]);plot3d(diff(f), [x,0,1], [y,0,1]);
plotplot3d(diff(f), [x,0,1], [y,0,1]);
Run Example
f(x, y) := 4 - x^2 - 2*y^2;
                                         2          2
(%o1)                    f(x, y) := 4 - x  + (- 2) y
(%i2) diff(f(x, y), x);
(%o2)                                - 2 x
(%i3) diff(f(x, y), y);
(%o3)                                - 4 y
(%i4) plot3d(4 - x^2 - 2*y^2, [x, 0, 5], [y, 0, 5]);
plotplot3d(4 - x^2 - 2*y^2, [x, 0, 5], [y, 0, 5]);
Run Example
f(x, y) := 4 - x^2 - 2*y^2;
                                         2          2
(%o1)                    f(x, y) := 4 - x  + (- 2) y
(%i2) diff(f(x, y), x);
(%o2)                                - 2 x
(%i3) diff(f(x, y), y);
(%o3)                                - 4 y
(%i4) f(3, 4);
(%o4)                                - 37
(%i5) plot3d(f(x, y), [x, 0, 5], [y, 0, 5]);
plotplot3d(f(x, y), [x, 0, 5], [y, 0, 5]);
[abs,define,diff,expand,find_root,float,plot2d,realroots] [abs,define,diff,expand,find_root,float,realroots] [abs,define,diff,find_root,float,pi,plot2d] [abs,define,diff,find_root,float,realroots] [abs,define,diff,float,pi] [abs,define,diff] [abs,diff] [abs,plot3d] [addcol,addrow,diff,ev,genmatrix,invert,kill,length,lmax,lmin,load,matrix,plot2d,romberg,sqrt,submatrix] [assoc_legendre_q,diff,legendre_q,load,plot2d,realpart] [assoc_legendre_q,diff,legendre_q,plot2d,realpart] [assume,constant,cos,declare,diff,let,letsimp,sin,solve,trigsimp] [assume,diff,ev,integrate,plot2d,sin] [assume,diff,ev,integrate,plot2d] [assume,diff,factor,integrate,log,ratsimp] [assume,diff,integrate,plot2d] [assume,diff,ode2] [at,diff] [atan,beta,diff,ev,gamma,rat] [atan,diff,plot2d,solve] [atan,diff,solve] [atan,diff] [atan,plot3d] [atan2,plot3d] [atvalue,depends,diff,integrate,log,plot3d] [atvalue,depends,diff,log,ode2,plot3d] [atvalue,desolve,diff] [atvalue,diff,exp,ode2,plot3d] [atvalue,diff,laplace,solve] [atvalue,diff,log,ode2,plot3d,solve] [atvalue,diff,log,ode2,plot3d] [atvalue,diff,ode2,plot3d] [bc2,depends,diff,kill,ode2] [bc2,diff,numer,ode2,plot2d,rhs,solve,subst] [cos,define,diff,expand,find_root,float,log,plot2d] [cos,define,diff,expand,float,log,plot2d] [cos,define,diff,expand,float,log] [cos,define,diff,find_root,float,plot2d,sqrt] [cos,define,diff,find_root,float,sqrt] [cos,define,diff,float,log] [cos,diff,integrate,load,plot2d,plot3d,sin] [cos,diff,integrate,plot2d,plot3d,sin] [cos,diff,plot3d,sin] [define,diff,linsolve,matrix,plot3d] [define,diff,linsolve,plot3d] [diff,exp,kill,log,makelist,ode2,plot2d,plot3d,solve] [diff,hessian,jacobian,linsolve,plot3d] [diff,integrate,log,plot3d] [diff,plot3d,sqrt] [diff,plot3d]

Related Help

Help for Diff

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