应该是(a-1)的绝对值+(b-3)的2次方=0吧
解得a=1,b=3
ab/1+(a+2)(b+2)之1+(a+4)(b+4)之1+.+(a+100)(b+100)
=1/(1×3) +1/(3×5) +1/(5×7) +……+1/(101×103)
=(1/2)×(1-1/3+1/3-1/5+1/5-1/7+……+1/101 -1/103)
=(1/2)×(1-1/103)
=51/103
应该是(a-1)的绝对值+(b-3)的2次方=0吧
解得a=1,b=3
ab/1+(a+2)(b+2)之1+(a+4)(b+4)之1+.+(a+100)(b+100)
=1/(1×3) +1/(3×5) +1/(5×7) +……+1/(101×103)
=(1/2)×(1-1/3+1/3-1/5+1/5-1/7+……+1/101 -1/103)
=(1/2)×(1-1/103)
=51/103