Recent content by phymatast

I have actually also found this formula on wikipedia: (A^B)(v,w)p = A(vp)B(wp) -A(wp)B(vp) So I tried to rewrite my two form as a wedge of two 1-forms: A = dx B= -ydy -dz Finally i applied the formula and I got A(vp)=1 B(wp)=1 A(wp)=-2 B(vp)=4 And dPsi(v,w) = (A^B)(v,w) = 9 I am not sure...

Homework Statement I am given a one form Psi = zdx -xydy and two vectors v(1,1,-2) and w(-2,1,1) both tangent vectors of R3 at point P(2,-1,0). I am asked to find dPsi(v,w). Homework Equations Lie bracket? The Attempt at a Solution I know how to computer Psi(v) at p but this...

it's 3/5 and not -3/5 and this will give you your answer using basic properties of logarithmic functions. hint: after you get 5^x = 3/5 take log base 5 on both sides

Try to Substitute: 5^x = y (with some restrictions on y) You'll end up solving a quadratic equation in y! Good luck