Question

( 8>f(x)=ln left(1+x^{2}right) )
st symmetic drout youris as ( +f(x)=f(x) )
( 10 rightarrow quad f(x)=|ln | x|| quad ) symmutic about yaris as ( f(x)=f(-x) )
Also the grabh, bend up alvout ( x=1 ) as ( ln x ) changys stan ( |ln 0| rightarrow+infty )
11.1
[
begin{aligned}
f(x) &=frac{sin x}{sqrt{1+tan ^{2} x}}+frac{cos x}{sqrt{1+cot ^{2} x}}
&=operatorname{sen} x+frac{cos x}{cos x}
&=sec x
&=sin 2 x
end{aligned}
]

# f(x) = in(1 + x2) f(x) = ||n|xl| re 10. 2 sketch 6 graph COSX V1+ cot? x sinx f(x) = V1+tan?x

Solution