when does the condition $x_i ________ imply $(1)$? what condition does $(2)$ not imply? does $(2)$ imply $(1)$ which condition does $(2)$ imply what condition would be true for $i$ how to find if x is zero in text what condition does $(1)$ hold which condition implies a zero value in x_i? what is the condition for x_i where does the condition $(2)$ is imply in the special case of $X_n$ does $(2)$ imply $(1)$ if $(2)$ does not hold $(1)$, is this true? does $(2)$ imply $(1)$ which condition indicates $(2)$ is not zero? which condition implies that $(2)$ is zero, but $(1)$ fails which condition imply $(1)$ what is the condition of $$sum_ineq j what is the condition for $$ for an integer what is the condition $sum_ineq implying a variable that holds