Computer not letting me go on password page I start my computer, I go to the thing to put in my password, it takes me back to the thing with the time and date
Please explain to me what is wrong with my computer and how to fix it

My has been slow anyone else’s ?

Let r be a robotic arm with a fixed base and seven links. the last joint of r is a prismatic joint, the other ones are revolute joints. give a set of parameters that determines a placement of r. what is the dimension of the configuration space resulting from your choice of parameters?

Which of the following "invisible" marks represents an inserted tab?