How do i simplify
-15arctan(3/4) + 15pi -20 to 15arctan(4/3) -20?

Question

How do i simplify
-15arctan(3/4) + 15pi -20 to 15arctan(4/3) -20?

anonymous · Answer

$$-15\arctan(3/4)+15\pi-20  = 15(\pi-\arctan(3/4)-20$$
$$=15(\pi-37°) -20$$
$$15\arctan(-3/4)-20$$

You cannot simplify it to the second equation

jdoe0001 · Answer

wonder if there's a context or something

jdoe0001 · Answer

http://fooplot.com/#W3sidHlwZSI6MCwiZXEiOiItMTVhdGFuKDMvNCkrMTVwaS0yMCIsImNvbG9yIjoiI0UzMTYxNiJ9LHsidHlwZSI6MCwiZXEiOiIxNWF0YW4oNC8zKS0yMCIsImNvbG9yIjoiIzE0MTQ3QSJ9LHsidHlwZSI6MTAwMCwid2luZG93IjpbIi0zMC45NDk3ODI3MTQ4NDM3NCIsIjMxLjAzOTA0Nzg1MTU2MjQ4MyIsIi0xNC4yODYzNjEwODM5ODQzNjYiLCIyMy44NjA2MTE1NzIyNjU2MSJdfV0- <--- as you can see, they do not equate

anonymous · Answer

Well basically, I have a function, which is 20x - 5x^2 / x^2 + 9
I have to find its primitive.

Some part of it is the same as in the answers, but this part differs,so I'm trying to understand that...

jdoe0001 · Answer

you may have better luck if maybe ask for the original material

anonymous · Answer

calculate the integral between 0 and 4 of the function i have provided above

jdoe0001 · Answer

hmmm dunno  it... try maybe posting anew for the integral instead, if someone knows, they'd help