9000070302 Level: BGiven function f(x)=x3+3x2+12x+4, find the intervals where f is a strictly concave down function.(−∞;−1)(−∞;0)(−∞;2)(−∞;4)
9000070303 Level: BGiven function f(x)=−x3+6x2+6x+1, find the intervals where f is a strictly concave up function.(−∞;2)(−1;∞)(−∞;3)(−∞;6)
9000070304 Level: BGiven function f(x)=−x3−12x2+12x−2, find the intervals where f is a strictly concave up function.(−∞;−4)(−∞;2)(−∞;6)(−∞;12)
9000070305 Level: BGiven function f(x)=x4+2x3−36x2+36x+2, find the intervals where f is a strictly concave down function.(−3;2)(−3;4)(−4;2)(−2;3)
9000070306 Level: BGiven function f(x)=x4+6x3−24x2+x+3, find the intervals where f is a strictly concave down function.(−4;1)(−6;2)(2;4)(−5;4)
9000070401 Level: AGiven the function f(x)=x2+x−2, find the intervals where f is an increasing function.(−12;∞)(−3;∞)(−2;∞)(−1;∞)
9000070402 Level: AGiven the function f(x)=x2−2x−8, find the intervals where f is a decreasing function.(−∞;1)(−∞;8)(−∞;2)(−∞;4)
9000070403 Level: AGiven function f(x)=−x2+2x+3, find the intervals where f is an increasing function.(−∞;1)(−∞;2)(−∞;3)(−∞;6)
9000070404 Level: AGiven function f(x)=−x2+4x+12, find the intervals where f is a decreasing function.(2;∞)(1;∞)(−4;∞)(−6;∞)
9000070405 Level: AGiven function f(x)=x3+3x2−24x+5, find the intervals where f is a decreasing function.(−4;2)(−3;5)(−3;3)(−5;1)