The x y-coordinate plane is given. The curve with two parts enters the window in the second quadrant just above the x-axis, goes up and right getting more steep, passes through the point (−7, 7), exits the window in the second quadrant nearly vertically to the left of the y-axis, reenters in the first quadrant nearly vertically to the right of the y-axis, goes down and right getting less steep, crosses the x-axis at x = 7, and exits the window in the fourth quadrant nearly horizontally above y = −7. (a) lim  x→−7  f(x)   (b) lim  x→0+  f(x)   (c) lim  x→0−  f(x)   (d) lim  x→0  f(x)   (e) f(0)   (f) lim  x→+∞  f(x)

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