Question

y=4cosx+13x+9  на отрезке [ 0; 3p/2]

Answer 1

y`=-4sinx+13=0⇒sinx=13/4∉[-1;1]
y(0)=4cos0+13*0+9=4+9=13-наим
y(3π/2)=4cos3π/2 +13*3π/2 +9≈70,23