a) \\( \\int\\left(3 x^{6}-5+\\frac{7}{x^{3}}\ ight) d x \\) b) \\( \\int\\left(\\frac{6}{\\sqrt{x}}-\\sqrt[5]{x^{2}}\ ight) d x \\) c) \\( \\int\\left(\\frac{7}{x}-\\frac{4 e^{x}}{5}\ ight) d x \\) d) \\( \\int x\\left(3-x^{4}\ ight) d x \\) e) \\( \\int \\frac{2 x^{4}-3 x^{5}+x^{2}}{x^{5}} d x \\)