" 8."(sec x sec y+tan x tan y)^(2)-(sec x tan y+tan x sec x)

(sec x sec y + tan x tan y) ^ (2) - (sec x tan y + tan x sec y) ^ (2) = 1 Prove it

The simplidied value of (sec x secy +tan x tany)^2-(sec x tan y + tan x secy)^2 is

If int e^(sec x)(sec x tan x f(x)+(sec x tan x + sec^(2) x))dx = e^(sec x)f(x) + C , then a possible choice of f(x) is

If int e^(sec x)(sec x tan x f(x)+(sec x tan x + sec^(2) x))dx = e^(sec x)f(x) + C , then a possible choice of f(x) is

y = tan^(-1) (sec x - tan x) , then dy/dx =

Is (sec x + tan x + 1)(sec x - tan x - 1) - 2tan x = 0 an identity.

Solve (dy)/(dx)+y tan x=y^(2)sec x

Solve (dy)/(dx)+y tan x=y^(2)sec x

Solve (dy)/(dx)+y tan x=y^(2)sec x