Question

помогите решить , подробно

Answer 1

$1)quad limlimits _{x to infty} frac{2x^4+5x^2-3}{5x^4-2x^3-4x} =limlimits _{x to infty} frac{x^4(2+frac{5}{x^2}-frac{3}{x^4})}{x^4(5-frac{2}{x}-frac{4}{x^3})} = frac{2+0-0}{5-0-0} =frac{2}{5}\\2)quad y=arccos(3x^2-2)\\y'= -frac{1}{sqrt{1-(3x^2-2)^2}} cdot 6x$