Question

Write an equation for the line tangent to the circle x2 + y2 = 17, at the point (4, 1).

Answer 1

eq. of tangent at(x1,y1) toa circle \(x^2+y^2=a^2\)
is \( xx1+yy1=a^2\)

Answer 2

It has to the at the point of (4,1)

Answer 3

x1=4,y1=1

Answer 4

\(a^2=17\)

Answer 5

it has to be written in form: y=mx+b

Answer 6

so it is 4x +1y=17
second method
\(find dy/dx at (4,1)\)
then eq. of tangent is
y-y1=m(x-x1)

Answer 7

okay i got the answer..Its y=-4x+17

Answer 8

can you help me on one more question..