Question

if x=y is a tangent to curve y=x²+bx+c at(1,1) then b+c=​

Answer 1

Step-by-step explanation:

here given that ( 1 , 1)

therefore

x = 1 , y = 1

hence the equation becomes

1 = ( 1 × 1 ) + (1 × b ) + c

1 = 1 + b + c

1 - 1 = b + c

0 = b + c

answer is b+c = 0