Mathematics

Help with calculus!!?!

If a point on the second derivative doesnt exist, does that mean theres an inflection point or what? Explanation please!!-No, the second derivative being zero or not in existence at a point doesnt mak

I need help with a math question involving differentiating a function

Q: Differentiate f(x) = 1 + xe^x / x - e^x Can someone explain how to solve this question?-you will have to differentiate this by the form d/dx(u/v)=(vdu/dx-udv/dx)/v^2 now for differentiating xe^x

I really need help with a math question involving differentiating a function

Q: Differentiate f(x) = (1 + xe^x) / (x - e^x) Can someone please explain how to solve this question?-if f = u / v then f´= (v u´ - u v´)/ v^2 f= (1 + xe^x) / (x - e^x) u = (1 + xe^x) u´= 0 + e^x +

I need help with a math question involving finding a limit

Q: Find the limitlim as t -> 0 is [sin(3t)*sin(5t)] / t^2 Can someone explain how to find this limit?-you know the common limit concept: lim(x->0) sin(x) / x = 1 right? you try and construct that sa

When do you use the quadratic formula and when do you use complete the square

I need to know.-All the answers are correct. but its also better to use the quadratic formula if you cant cut b evenly in completing the square. so you dont have to deal with fractions.-I take it you

Suppose that F (x) = f(g(x)) and g(3) = 6, g'(3) = 4, f'(3) = 2, and f'(6) = 7. Find F'(3)

Suppose that F (x) = f(g(x)) and g(3) = 6, g(3) = 4, f(3) = 2, and f(6) = 7. Find F(3)-By the Chain Rule, F(3) = f (g(3)) * g(3) .........= f (6) * 4 .........= 7 * 4 .........= 28. I hope this helps

Can someone factor u^3-v^3-v^2v+uv^2 and x^2-y^2-4y-4

Step by step please. Thanks-the third term is u^2v, right? If so, put in standard order first: u^3-v^3-u^2v+uv^2=u^3-u^2v+uv^2-v^3 Now factor by grouping: = u^2(u-v) +v^2(u-v) =(u-v)(u^2+v^2) ------

Can anyone solve this

admission to the park was $.50 for people over 12 and $.25 for children 6-12 . Children under 6 were free. Write an equation that represents the cost of tickets for any group.-Where x = no. of people

Half And Double angle and adding/subtracting trig identities

Sinα = 4/5andCosβ = 5/13 Sin2α Cos2α Sinαβ Tan2α Cos1/2β Tan1/2α Sin1/2αCan You Please show me how to do this practice problems step by step!! :) i have a test on this tomorrow and can seem to unders

How come factorial of zero is equal to one

n! = n(n-1)(n-2)...3.2.1 or, n! = n(n-1)! If n=1 then 1! = 1 (1-1)! or, 1 = 0! So factorial of Zero is one.-n! = n x (n-1)! 1!= 1*0! 1=0!-it is a useful definition !

Help With Pre-Calculus

Sinα = 4/5 and Cosβ = 5/13 Sin2α Cos2α Sinαβ Tan2α Cos1/2β Tan1/2α Sin1/2α Can You Please show me how to do this practice problems step by step!! :) i have a test on this tomorrow and can seem to u

Math help please!?....

mrs. winship sells chocolate fudge for $7.50 per pound and peanut butter fudge for $7.00 per pound. The total number of pounds sold on saturday was 146 and the total amount of money collected was $106

Calc question? Find f'(4)

the problem said f(t)=radical 5/t^3 and i got f(t)=-3radical5t^-4 but i cant figure out what f(4) is! HELP?! D: Please and thank you!-ƒ(t) = -3(√5) / ( t⁴ ) ƒ(4) = -3(√5) / ( 4⁴ ) = -3(√5) / (256 ) .

How do i study maths , physics, chemistry, biology

guys please help me i dint study anythingin maths , physics, chemistry, biology . i have 7 days holidays and after 7 days i have my exam . so guys please give me some easy suggestions, on how can i st

How can you find the square root of a 3-4 digit number

Without using a calculator...-Write down a factor tree for example: 196/\2 98/\2 49/\7 7 Now that you have your factor tree, you take the numbers that only 1 and itself can go into. In this case its o