secx dx secxtanx This integral involves trigonometric functions. We can solve it by using substitution. Let’s begin by substituting u = sec x. To do this, we...
tan^-1(x) 1/(1+x^2) The notation tan^-1(x) (sometimes written as arctan(x) or atan(x)) represents the inverse tangent function. It is an inverse trigonometric function that takes a ratio of...