# Alex

### Can I order alcohol the night before my 21st birthday?

My birthday is in five weeks and I wanted to know if I could order alcohol in a bar before the midnight strikes.

I live in California.

Also, should I go to Las Vegas?! I'm thinking about it, but a lot of my friends are underage like 20 or 19.

1 AnswerEntertaining7 years ago### How do I solve this integral problem?

Do I need to use the U-substitution? I need to brush up on these because I forgot even though calc 1 was like a few weeks ago.

The problem is the integral from -1 to 1. pi( 2 - x^2)^2 dx

3 AnswersMathematics7 years ago### Can the light reactions in photosynthesis occur without the Calvin Cycle?

Would the light reactions, with continual light, be able to continually produce ATP and NADPH?

2 AnswersBiology7 years ago### What does it mean to find the left hand solution for newton's method?

The equation is :

-x^2 + 4x - 1 = 0, x = 0

And for this other example it asks me to find the negative solution:

x^4 - 3 = 0, x = 1

2 AnswersMathematics7 years ago### How do I compute this indefinite logarithmic integral?

(x^2) / (3x - 1) dx

OF course, I was able to find u(x) and the derivative. But that is all.

2 AnswersMathematics7 years ago### How do I solve this logarithmic differentiation?

The equation is f(t) = (t+5)^6 (t-3)^4

I used the log rule where you add these together, and then move with the power rule to get those exponents in front. The last step I can't figure out how the help does it.

This is how far I get: f '(x) / f (x) which is 6(1) /(t+5) + 4(1) /(t-3)

3 AnswersMathematics7 years ago### How do I simplify this natural log?

The natural logarithm is: ln (z^4 + z^2)

It has been awhile, so I can't solve this one.

1 AnswerMathematics7 years ago### How do I solve this trig sum formula?

sin(2pi/5) cos(4pi/5) + cos(2pi/5) sin(4pi/5)?

I'm supposed to get the exact value. So a decimal value or the one in fractions?

3 AnswersMathematics7 years ago### How to do this newton's method?

My root is x^2 - 9x - 3 in the range of 3 < x < 13

within

3 decimal places of accuracy (that is, within 0.0005).

So I have to choose an initial point on the x-axis, then type in the equation tangent to the graph of the function (x-not, f(x-not))

I cant find the symbol for that x and the subscript of zero.

But anyway, how do we do this part?

I was successful with someone when we did the the closest approximation when you keep doing it until you get close enough.

1 AnswerMathematics7 years ago### What are the x-intercepts and the vertex of this parabola?

x^2 + 2x - 15

4 AnswersMathematics7 years ago### What is the antiderivative of this integral?

x^2 ( x^4 - 1/x^4) dx =

I'm asked to compute this integral. Im like.....cause these are a little harder.

6 AnswersMathematics7 years ago### What is the second derivative of cos(pi t) + 2t^3?

I'm supposed to find the displacement for velocity and acceleration when t = 1sec. For velocity ( or the first derivative) I got 6.

I can't figure out the acceleration.

1 AnswerMathematics7 years ago### What is the derivative of this piecewise function?

e^x if x in (-2, 0)

ln(x + 1) + 1 if x in (0, 1)

ln(2e/x) if x in [1, 3)

I've been able to solve the given values for the derivative for the first and second.

But I need to find the derivative of f at x = 1

1 AnswerMathematics7 years ago### What is the second derivative of cos(x^2)?

Got lost on after the first derivative.

3 AnswersMathematics7 years ago### What is the chain rule of this function?

sin (x^2) cos (2x)

The thing that confuses me sometimes is the fact that there is an exponent for one, and the other has a 2x.

2 AnswersMathematics7 years ago### How do I solve this length and width optimization problem?

Angus McGee is designing a cattle ranch in the shape of a rectangle, with 2 rectangular interior sections separated by parallel walls, using fencing material made of split rail snake fence. He wants the cattle ranch to have an area of 1200 square miles, and he wants to enclose it as cheaply as possible, using the fewest linear miles of fencing that he can.

What should the length and width be, and what would be the length of fence, of Angus McGee's optimal cattle ranch?

I know the site tells me to use the equation 2X + 5Y = 1200, but it isn't working. Does anyone have another way to solve these kinds of problems? It's the opposite of determining how much fencing you need.

1 AnswerMathematics7 years ago