Recent content by livestrong136

thnx a lot SammyS, can someone help me with d and e.

Help Derivatives ASAP -- maximizing sunlight through a window 3. The amount of daylight a particular location on Earth receives on a given day of the year can be modeled by a sinusoidal function. The amount of daylight that Windsor, Ontario will experience in 2007 can be modeled by the function...

Derivatives Question -- temperature as a funtion of time 1. When a certain object is placed in an oven at 540°C, its temperature T(t) rises according to the equation T(t) = 540(1 – e–0.1t), where tis the elapsed time (in minutes). What is the temperature after 10 minutes and how quickly is it...

Ok, from now on i'll post one question at a time. I didn't get what you really mean for #5 and 6. They both looked true to me.. can you clear it, are they true or false. And for 9b. I think leaving the answer like -h/2(2+h) doesn't seem right, my teacher also said that it is close but still...

1. For which following condition, will the cross product of two vectors be zero? a. If the angle between them is 90°. b. If the angle between them is 0°. c. If the angle between them is 45°. d. If the vectors have the same magnitude. 2. If a = (5, 2) and b = (-3, 1), then which of the...

? I am confused

NEED CORRECTION, also this . means dot multiplication. My teacher comments: #6) you've made some errors (-2 marks) #8) correct, they intersect at a point, but you need to find the point like you did in #7 for full marks (-3 marks) 6.Determine the intersection, if any, of the planes...

What is the simplified average rate of change between x = 2 and x = 2 + h for the function: (Enter your expression as you would enter an equation in Winplot) a. ƒ(x) = 1/x? = -2/(2+h)

https://www.physicsforums.com/attachment.php?attachmentid=47375&stc=1&d=1337282982 Given the following graph of the function y = ƒ(x) Find the interval(s) x value(s) for which each of the following is/are true ( Enter your answers separated by commas with no spaces. eg. A ƒ′(x) = 0 = B...

So what should be the answer for f.)

A ball is thrown downwards from a top of a 20m building with an initial velocity of 15m/s. What equation could be used to model its height? My answer: h (t) = -4.9t2-15t+20

Thnx for checking, I didn't get what are you trying to say for 3f.

1. A 1000 L tank is draining such that the volume V of water remaining in the tank after t minutes is v=1000(1-t/60)2. Find the rate at which the water is flowing out of the tank after 10 min. Calculate dV/dt using chain rule u = 1 - t/60: u = 1 - t/60 ==> du/dt = -1/60 V = 1000u^2 ==> dV/du =...

1. Two trains start from the same point at the same time, one going east at a rate of 40 km/h and the other going south at 60 km/h, as shown in the diagram at right. Find the rate at which they are separating after a) 1 h of travel b) 2 h of travel. You must show how to find the answer using...

2 very quick questions?? help needed asap 1. What is the inverse of the function ƒ(x) = ex? I think its 0? what do you guys think. 2. What is the lim (e^(x+h) - e^x)/h This one i tried and got a really weird answer can someone just give me just the answer??