Question

设集合M={y|y=x^2+4x+3,x属于R},P={x|x=2-2t-t^2,t属于R},则M交P=

Answer 1

M={y|y=x^2+4x+3,x属于R}={y|y=(x+2)^2-1,x属于R}={y>=-1}

P={x|x=2-2t-t^2,t属于R}={x|x=-(t+1)^2+3,t属于R}={x