# Thread: Calculus and Vectors HELP

1. ## Calculus and Vectors HELP

1) If v= (t, 2t-1, 2t) is a unit vector, find t
- can't figure out how to solve for t. (oh and in the question there is an arrow over the v but i cant figure out how to do that on here)

2)Find a parametric equation for the plane 2x+6y-5z-30=0
-not exactly sure how to change a scalar equation into a paramteric equation

2. Originally Posted by agrogirl
1) If v= (t, 2t-1, 2t) is a unit vector, find t
- can't figure out how to solve for t. (oh and in the question there is an arrow over the v but i cant figure out how to do that on here)
Solve for t: $\displaystyle 1 = \left\| {\vec v} \right\|^2 = \left( t \right)^2 + \left( {2t - 1} \right)^2 + \left( {2t} \right)^2$.