1 Let K(X) = x2 + 2 The function k is increasing on the following interval(s): O (-00, 00) O ( -0o, a) O ( - 00, a] O ( a , 00 ) [a, 00) O ( - 0o, a ) U ( b, 00 ) O ( - 0o, a ] u [ b, 0o) (a, b) [a, b] None a = b = k is decreasing on the following interval(s) : O (-00, 00) O ( -00, C ) O (-0o, c] O ( C, 00 ) [ C, 00) O ( - 0o , c ) U (d , 0o ) O ( -0o, c] U [d, co ) ( c, d ) [c, d] None C= d = * symbolic formatting