Write the expression as the natural log of a single quantity. 1. 2 [In x -In(x+1)-In(x-1)] 2. [ In(x7 +1)-In(x+1)-In(x-1)] 3. Find the equation of the line tangent to the function y = In x' at the point (1, 0). Compute the first derivative of the function y = In z( +3)' 5. Find the equation of the line tangent to the function f(x) = sin 2xIn x at the point (1, 0). 6. Find - of the following function 4xy + Inx y =7 dx