г) f(x) = 3x - tgx - 8, [0;π/4]
д) f(x) = 7sinx - 8x + 9, [-3π/2;0]
е) f(x) = 9x - 8sinx +7, [-π/2;0]
г) f(x) = 3x - tgx - 8, [0;π/4]
д) f(x) = 7sinx - 8x + 9, [-3π/2;0]
е) f(x) = 9x - 8sinx +7, [-π/2;0]