Contents of Limits

Limits

Evaluate the following limits:

$\lim\limits_{{x\rightarrow 0}}^{}$ ${\dfrac{{1+\sin x}}{{1+\cos x}}}$
$\lim\limits_{{x\rightarrow 0}}^{}$ ${\dfrac{{\sin x}}{{2x^{2}-x}}}$
$\lim_{{x\rightarrow \infty }}^{}$ ${\frac{{3x^{3}+4x^{2}+5}}{{7x^{3}-21x^{2}+1}}}$