For each problem, find the equation of the secant line that intersects the given points on the function. And also find the equation on the tangent line to the function at the leftmost given point. 21. f(x) = 1/x+1 ; (0,1) , (1/4, 4/5) 22. f(x) = -1/x-2 ; (-1, 1/3), (-3/4, 4/11) 23. f(x) = -1/x-3 ; (0, 1/3) , (1/4, 4/11

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