2. Re: Range

What have you tried? For example: What's the range of the sinus? and cosinus? ...

3. Re: Range

I transcribe it correctly: Find the range of the function

$f(x)=\cos\left(\sin \left(\log\frac{e^{2}+x^{2}}{x^{2}}+1\right)\right )+\sin \left(\cos \left(\log\frac{e^{2}+x^{2}}{x^{2}}+1\right)\right )$

4. Re: Range

sir sin and cos both are taking values from [-1,1] but next