Recent content by ZdravkoBG

I forgot about that method to check. The scalar/dot product of the two perpendicular vectors should be 0. Thanks for all the help!

I think I got it. I found the slope of the tangent line at x=0 to be 8. After that, I constructed a vector from point (0,2) to next point on tangent line (1,10). That vector is V = <1,8> which satisfies the first part of the problem. For the second part, I built the equation of the...

Well, the general equations would be y=mx+b However, at this point in the class, we are only using parametrics for lines. In other words, the only lines we have built so far (involving vectors) have been in this format: x = a + bt y = a + bt etc...

Homework Statement f (x) = e^(3x) + sin(2x) + 3x +1 (a) Find a vector V that is tangent to the graph of y = f(x) at the point ( 0, 2). (b) Find a vector N that is perpendicular to the graph of y = f(x) at the point ( 0, 2). 2. The attempt at a solution The first step I took is to...

Thanks guys, helped a bunch!

Thanks for the hint, I had not realized that the truck had no acceleration. What I did now is I found how much time is needed for the truck to pass the bridge. I used the displacement formula: X=X0+V0t+(1/2)*a*t^2 I substituted what I knew: 12=0+55t+(1/2)*0*t^2 t=0.27 I am...

Homework Statement A person standing on a bridge overlooking a highway inadvertently drops an apple over the railing just as the front end of a truck passes directly below the railing. If the vehicle is moving at 55km/h and is 12m long, how far above the truck must the railing be if the...