Find the derivative of f(x)=cosx-2tanx.

I hope this helps you

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

(1/x + 1)^2 + 6 (1/x + 1) +5