Find the derivative of f(x)=x^−1 +4ln(tanx)+sin^−1(2x).

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

With alll of except for the 2 that i did already