Question

7.
If f (x) =
1 - 2 tan x then find the value
1+2 tan x​

Answer 1

Step-by-step explanation:

Let f(x) be y.

So, y = 1 -2 tan x

2Tan x = (1-y)----------A

Now, in 1 +2 Tan x

= 1 + 1 - y

= 2 -y

Answer 2

Answer:

$\tan(x) = \frac{f(x) - 1}{ - 2} \\ \\ 1 + 2 \tan(x) = 1 + 2( \frac{f(x) - 1}{ - 2} ) \\ \\ = 1 - (f(x) - 1) = 2 - f(x)$