\\( \\int\\left(5 x^{2}-14\ ight) \\cos (\\pi x) d x= \\) \\( \\begin{array}{l}\\frac{1}{\\pi}\\left(5 x^{2}-14\ ight) \\sin (\\pi x)-\\frac{10}{\\pi^{2}} x \\cos (\\pi x)+\\frac{10}{\\pi^{3}} \\sin (\\pi x)+\\mathrm{c} \\\\ \\frac{1}{\\pi}\\left(5 x^{2}-14\ ight) \\sin (\\pi x)+\\frac{10}{\\pi^{2}} x \\cos (\\pi x)-\\frac{10}{\\pi^{3}} \\sin (\\pi x)+\\mathrm{c} \\\\ \\frac{1}{\\pi}\\left(5 x^{2}-14\ ight) \\cos (\\pi x)+\\frac{10}{\\pi^{2}} x \\sin (\\pi x)-\\frac{10}{\\pi^{3}} \\cos (\\pi x)+\\mathrm{c} \\\\ \\frac{1}{\\pi}\\left(5 x^{2}-14\ ight) \\cos (\\pi x)-\\frac{10}{\\pi^{2}} x \\sin (\\pi x)+\\frac{10}{\\pi^{3}} \\cos (\\pi x)+\\mathrm{c}\\end{array} \\)