Find the derivative and simplify: f(x) = (sin x)/(tan^2 x - sec^2 x). Find the derivatives of, (a) y = 2 secx - 2 cscx (b) f(x) = e^(cosx) ? ln( sin x ) . What is the derivative of sin(x^2 + 5) cos(x^2 + 9x + 2)? What is the derivative of f(x) t...
What is the derivative of sin x minus cos x? d/dx(sinx-cosx)=cosx--sinx=cosx+sinx How do you prove the following identity sec x - cos x equals sin x tan x? you need this identities to solve the problem..that is something you have to memorized sec x= 1/cosx 1-cos2x= sin2x ...
下列选项中，对《踏莎行》理解赏析有误的一项是（ ）踏莎行贺铸踏莎行贺铸踏莎行贺铸杨柳回塘，鸳鸯别浦。绿萍涨断莲舟路。断无蜂蝶慕幽香，红衣脱尽芳心苦。返照迎潮，行云带雨。依依似与人语。当年不肯嫁春风，无端却被秋风误。