dy/dx increasing function

[crimson slate]

how do i do 9cii?

[obtuse phoenix]

,rotate

[obtuse phoenix]

15/4>x>0 implies 15/4 < 0 which is a contradiction
since it's an increasing function, f'(x) > 0 by definition since < 0 it'd start decreasing

so only way it's true is x>15/4

[main summit]

if ur not sure just sub in a val of x e.g.

15/4 - (1*10^-15)

so really small change in x below

to see if its increasing or not

when u do that u would see its not >0 so then u know

x>15/4

[crimson slate]

yeah thanks i get it now🙏🙏

[crimson slate]

thanks bro🙏🙏