yash
http://alltypeim.blogspot.in/
http://alltypeim.blogspot.in/
Itm universe
TANGENT
PLANE AND
NORMAL LINE
GRAPHICAL
REPRESENTATI
ON
http://alltypeim.blogspot.in/
http://alltypeim.blogspot.in/
Tangent planes
Suppose a surface S has equation z = f(x, y),
where f has continuous first partial derivatives.
Let P(x0, y0, z0) be a point on S.
http://alltypeim.blogspot.in/
• Let T1 and T2 be the tangent lines to
the curves C1 and C2 at the point P.
Tangent planes
http://alltypeim.blogspot.in/
Tangent planes
http://alltypeim.blogspot.in/
An equation of the tangent plane to the
surface z = f(x, y) at the point P(x0, y0, z0)
is:
fx(x0, y0, z0)(x – x0) + fy(x0, y0, z0)(y – y0) + fz
(x0, y0, z0) ( z– z0 )= 0
Tangent planes
http://alltypeim.blogspot.in/
Normal line
 The normal line to a curve at a particular point is the line
through that point and perpendicular to the tangent.
 A person might remember from analytic geometry that the
slope of any line perpendicular to a line with slope m is
the negative reciprocal −1/m.
 Thus, just changing this aspect of the equation for the
tangent line, we can say generally that the equation of the
normal line to the graph of ’f’at (x0 ,f(x0 )) is
y − f(x0 ) = −1 (x−x0 ).
f′(x0 )
http://alltypeim.blogspot.in/
NORMAL LINE
http://alltypeim.blogspot.in/
 Let f (x,y,z) define a surface that is differentiable at a
point (x0,y0,z0), then the normal line to f(x,y,z) at ( x0 , y0 ,
z0 ) is the line with normal vector
f (x0,y0,z0)
that passes through the point (x0,y0,z0). In Particular the
equation of the normal line is
x(t) = x0 + fx(x0,y0,z0) t
y(t) = y0 + fy(x0,y0,z0) t
z(t) = z0 + fz(x0,y0,z0) t
NORMAL LINE
http://alltypeim.blogspot.in/
NORMAL LINE
http://alltypeim.blogspot.in/
http://alltypeim.blogspot.in/

Tangent plane