Recent content by unseenoi

My professor uses this as her particular solution: yp = At^3e^t but I don't understand why can someone help me?

hello can someone explain how to guess the yp for this Non-homogeneous differential equation y'' - 2y' + y = te^t characteristic polynomial: (y - 1)^2 so the characteristic roots are: y1=y2= 1 c1 and c2 are constant for yh = (c1)e^t + (c2)te^t please explained how to guess for te^t

no i am not

hi everyone can someone please help me out. This is not homework just getting ready for school integral of sin(x^2)

You would have to Add particles.

Homework Statement Consider an electrically neutral object. If this object is given a net positive charge does its mass increase, decrease or remain the same? Homework Equations The Attempt at a Solution i say that the mass decrease. but i don't know why, can someone please...

Can u please give me more details.

Homework Statement I know this is a dumb question but if the radius of a planet is one-fifth of the Earth's radius. what is the mass of the planet. Earth mass => 5.97 *1024 earth radius => 6.38 *106 The Attempt at a Solution my answer: 5.97 *1024(1/10)