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3. Find the limits using the graph of the function f below. If the answer looks like oo or -oo write that. If the limit does not exist, write, "DNE." (a) lim f(x) = (b) lim f(x) = (c) lim f(x) = (d) lim f(x) = *+-1 x -+ - 1+ I -+0- (e) lim f(x) = (f) lim f (z) = (g) lim f(x) = 2 -+ 0+ (h) lim I -+0 2-+1+ x-+5+f(2)=