y = $\displaystyle {\arctan{{\left({4}+{\sin{{\left({x}\right)}}}\right)}}}$



Calculate $\displaystyle \frac{{\left.{d}{y}\right.}}{{\left.{d}{x}\right.}}$ =Preview Question 6  



Type sin(x) for $\displaystyle {\sin{{\left({x}\right)}}}$ , cos(x) for $\displaystyle {\cos{{\left({x}\right)}}}$, and so on.

Use x^2 for $\displaystyle {x}^{{2}}$, (x+2)^3 for $\displaystyle {\left({x}+{2}\right)}^{{3}}$, sqrt(x) for $\displaystyle \sqrt{{{x}}}$,

Use ( sin(x) )^2 to square sin(x).