Question 894673
differentiate y=2sin3x / (x-1)
Use parentheses to eliminate the ambiguity.
y = 2sin(3x)*(x-1)^-1
y' = 2*3*cos(3x)*(x-1)^-1 + 2sin(3x)*(-1)*(x-1)^-2
= {{{(6cos(3x)(x-1) - 2sin(3x))/(x-1)^2}}}