Question

For the points on the circle x² + y² –2x –2y + 1 = 0 the sum of maximum and minimum values of 4x + 3y is -

• A. $\frac { 26 } { 3 }$
• B. 10
• C. 12
• D. ) 14

Answer 1

)

Sol. Any point on the circle is (1 + cosq, 1 + sinq)

Ž 4x + 3y = 4(1 + cosq) + 3(1 + sinq)