how do you acquisition the centre of rotation?
and the bend of rotation?
iwent on websites but none of them help

Answers :It depends a lot on the absolute botheration you're considering. A hinged aperture for instance has the arbor of circling acutely defined. A physique affective advisedly rotates about the centermost of mass, so your acknowledgment depends on the constraints and peculiars of the botheration you're considering.

ok actuality are a few of them!

r - 14 = - 23

d - 19 = 1

u - 21 = 0

f - 23 = 23

h + 35 = 7


thank you so much!!!!