a) Jos a > 0, suht. maksimi y(
) =
a3, suht. minimi y(a) = 0; jos a < 0, suht. maksimi
y(a) = 0, suht. minimi y(
) =
a3; b) suht. maksimi y(-a) = -2a, suht. minimi
y(a) = 2a (a > 0); c) abs. maksimi y(
) =
, suht. minimi y(1) = 1; d) abs. maksimi
y(1) = 1, abs. minimi y(-1) = -1, suht. maksimi y(-
) = 0, suht. minimi y(
) = 0.