Mathematics - 15 October 2007

find the derivative

2007-10-15 02:59:24 · 4 answers · asked by Anonymous

what is the present value of $10,000 you will receive in 5 years with an expected rate of interest of 8%, if discounted a) quarterly and b) continuously

a)
.08/12 = .0066

5 years = 60 months

PV = 10,000(1.0066/4)^4*60

b)
PV = 10,000 * e^(.08 * 5)

are those correct? thanks in advance to anyone helping me with this.

2007-10-15 02:53:25 · 4 answers · asked by Mathema-what?! 1

how can i prove this?

sin x/1-cosx + 1-cosx/sinx = 2cscx

2007-10-15 02:23:49 · 3 answers · asked by Mitzy D 1

Decide if the situation requires an exact or estimated answer and explain your reasoning. You are asked to determine the correct amount of liquid medicine to give to a sick baby panda if the directions say to give an amount based on the animal’s weight.

2007-10-15 02:20:25 · 6 answers · asked by MiSs MoM 2

Determine a positive constant c such that the equation
xy^2 − y^2 − x + y = c
has precisely three solutions (x, y) in positive integers.

P.S. xy^2 = x*(y^2)

2007-10-15 02:11:27 · 4 answers · asked by Archit 2

(cos(^2)x)cosecx = cosecx - sinx

Note: the (cos(^2)x) is cos squared times x not cos to the power 2x.

any help would be appreciated.

:)

2007-10-15 01:17:22 · 8 answers · asked by Anonymous

Add:

(w5 + 2w3 – 3) + (2w5 – 3w3 – 4)

Thanks!

2007-10-15 01:00:25 · 5 answers · asked by Pete 1

Evaluate 4x^3 + 2x^2 – 1 for x = 1

Thanks for the help!

2007-10-15 00:59:24 · 9 answers · asked by Pete 1

I can see how differentiating works (setting the derivative = to 0). But apparently that only gives the "possible" points? How would I know with there is local extrema at those x-values? When would it be incorrect?

2007-10-15 00:41:08 · 4 answers · asked by de4th 4