Jawabanmu

2014-05-22T12:12:24+07:00
F(2) = 1-2(2)²
=1-(2.4)
=1-8
=-7
2014-05-22T12:14:59+07:00
f(x)=1-2x² 
f(2) = 1 - 2(2)² = 1 - 8 = -7