Let the derivative of the function f^1=2x(5-x)(x+3). Find the interval(s) on which f(x) is increasing. The intervals on which f(x) is decreasing (note that I have you derivative of function

i need the options

step-by-step explanation:

correct answer:

b.(19,-2)

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this