Wednesday

April 23, 2014

April 23, 2014

Posted by **Anonymous** on Tuesday, January 3, 2012 at 3:08pm.

- Calc -
**Reiny**, Tuesday, January 3, 2012 at 3:21pmdy/dx = x^2 + x + 1

at x=1 ,slope of tangent is 1+1+1 = 3

so slope of normal is -1/3

when x=1, y = 1/3 + 1/2 + 1 = 11/6

so equation of normal:

y = (-1/3)x + b, at (1, 11/6)

11/6 = -1/3 + b

b = 3/2

y = (-1/3)x + 13/6

for y-intercept, let x = 0

y = 13/6

it cuts at (0,13/6)

check my arithmetic

**Related Questions**

math - Quadrilateral ABCD is a square. The coordinates of point A are (3,2), ...

math - the tangent yo the curve y=x^2 +5x -2 @ the point (1,4)intersect the ...

Geometry - line segment ab is the diameter of circle O whose center has ...

Geometry - line segment ab is the diameter of circle O whose center has ...

calc - Find the corresponding rectangular coordinates for the polar point (4...

Calc 2 - Find the corresponding rectangular coordinates for the polar point (4...

math - A parabola has the equation y = 4(x-3)^2-7 Choose 2 true statements: A) ...

Calc. - Use normal vectors to determine the intersection, if any, for each of ...

Calc. - Use normal vectors to determine the intersection, if any, for each of ...

calc 3 - Use polar coordinates to find the limit. [If (r, θ) are polar ...