1.Which one of the following relations on R\mathbb{R}R is an equivalence relation?a.xR1y⇔x2=y2x R_1 y \Leftrightarrow x^2 = y^2xR1y⇔x2=y2b.xR2y⇔x≥yx R_2 y \Leftrightarrow x \ge yxR2y⇔x≥yc.xR3y⇔x∣yx R_3 y \Leftrightarrow x \mid yxR3y⇔x∣y (xxx divides yyy)d.xR4y⇔x<yx R_4 y \Leftrightarrow x < yxR4y⇔x<yLogin to continueOnly logged in users canattempt or see the solution.
