tentukan nilai a dan b yang memenuhi kesamaan limit berikut

(2ax + b)/1 = 1
masukan x = 2
2a(2) + b = 1
4a + b = 1
ax² + bx = 0
a(2)² + b(2) = 0
4a + 2b = 0
eliminasi
4a + b = 1
4a + 2b = 0
----------------- _
-b = 1
b = -1
4a + b = 1
4a - 1 = 1
4a = 1 + 1
a = 2/4 = 1/2