Question

Select the correct answer from the given alternative:

If y = `("a"x + "b")/("c"x + "d")`, then `("d"y)/("d"x)` =

Options

• `("ab" - "cd")/("c"x + "d")^2`

• `("a"x - "c")/("c"x + "d")^2`

• `("ac" - "bd")/("c"x + "d")^2`

• `("ad" - "bc")/("c"x + "d")^2`

Answer 1

If y = `("a"x + "b")/("c"x + "d")`, then `("d"y)/("d"x)` = `("ad" - "bc")/("c"x + "d")^2`