已知全集I=R,A={x|x2-3x+2《0}.B={x|x2-2ax+a《0.a属于R},且B含于A,求实数a的取值范围

已知全集I=R,A={x|x2-3x+2《0}.B={x|x2-2ax+a《0.a属于R},且B含于A,求实数a的取值范围
已知全集I=R,A={x|x2-3x+2《0}.B={x|x2-2ax+a《0.a属于R},且B含于A,求实数a的取值范围

已知全集I=R,A={x|x2-3x+2《0}.B={x|x2-2ax+a《0.a属于R},且B含于A,求实数a的取值范围
A={x|x2-3x+2《0} x^2-3x+2=(x-1)(x-2)《0 1《x《2
B含于A
B={x|x2-2ax+a《0} x^2-2ax+a《0 判别式为4a^2-4a
判别式小于0时,即4a^2-4a