Mark M.

Quadratic Equations

10/16/16

(x)^2*(2x-5)^2

hello please can you solve this equation (x)2*(2x-5)2 find x

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Answers •2

Derivatives

10/16/16

Suppose that f(2) = -5, g(2) = 3, f '(2) = -2, and g'(2) = 1. Find h'(2) for h(x) = g(x)/(1+f(x))

Suppose that f(2) = −5, g(2) = 3, f '(2) = −2, and g'(2) = 1. Find h'(2) for h(x) = g(x)/(1+f(x))

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Answers •2

Math Calculus Maximum

10/15/16

An open box with its base having a length twice its width is to be constructed with 600 square cm of material. Find its dimensions that maximize the volume.

so I am asked to maximize l*w*h = 2w^2*h l*w +2w*h+2lh=600 I solved for h in terms of w 2w*w+2wh+2*2wh=600 2wh+4wh=600-2w^2 h(6w)=600-2w^2 h=(600-2w^2)/(6w) I plugged it into l*w*h and... more

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Answers •1

Algebra Help

10/15/16

Dealing with unknown constant within summation.

I want to be able to rearrange the equation so that the constant B is removed form the sine component of the following summation. Example (i=1 to n) Σ sin(Bxi)cos(BXi) = 0? I have all the... more

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Math

10/14/16

How do I find the derivative of 7x (lnx +ln7)-8x+e?

F (x)= 7x (lnx +ln7)-8x+e I assumed e was a constant so it's derivative is 0, and the derivative of an ln constant is 0 so I got 7 (lnx+ln7)*(1/x) -8 but I got it wrong and I'm a little stupped... more

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Algebra Graphing Graph Transformations

10/14/16

Graph Transformtions

given g(x)=3(cube root of -x)+6 describe the transformations in the appropriate order. Create a sketch of the new function and label 3 points. I was unsure of how to put in a cube root symbol... more

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Math

10/13/16

how to take the derivative of a natural log function.

so the function given is a(t)=ln((1-cost)/(1+cost))^4 my teacher said I can't take the natural log of a natural log so I don't know how to take the derivative of this function. please help me.

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Answers •1

Radicals

10/12/16

simplifying with radicals

In Algebra 1 I am given the following problem: Simplify: 6√8 + 5√12 x 3√2 x 4√3 Please help me.

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Answers •2

Non Linear function

10/12/16

non-linear function

In Algebra 1 I am given the following problem: Give an example of a non-linear function. Please help me.

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Answers •2

Math

10/12/16

how to take the derivative of a trig function if the trig function is the exponent

So I was given 4^cos(x) and I approached it like a power functions so I dot the derivative (cos(x)*4^cos(x)-1) * -sin(x) but I got it wrong. The only other thing I could think of was taking the log... more

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Other

10/12/16

MAT1033 word problem

A family has two cars. The first car has a fuel efficiency of 35 miles per gallon of gas and the second has a fuel efficiency of 15 miles per gallon of gas. During one particular week, the two cars... more

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Math

10/12/16

Finding derivatives of trig functions.

Find the derivative of the function. y = 5tan(x^6) + sec(π/3) So my teacher gave us this question to think about and I'm not sure how to approach it. Would you just use the product and chain... more

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Calculus

10/12/16

FindING the approximation of a sqroot

A) f(x) = sqr (x) Find the tangent line for x = 25. B) using the tangent line in a, find the approximation of sqr (26) I know how to do part A but I don't know how to do part B. How would... more

part c) g(θ) = 8(7)^−θ I tried to find this and I used the chain rule where I assumed 8 was the outer derivative and (7)^−θ was the inner derivative. I got 8* -θ(7)^(-θ-1) but I got it wrong.... more

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Answers •2

Algebra

10/10/16

how do you factor this?

9v^2-73v-72

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Answers •1

Calculus Ab

10/10/16

find y'(3) when y=7

I don't understand because if the derivative is 0, what would y'(3) be?

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Answers •1

(x)^2*(2x-5)^2

Suppose that f(2) = -5, g(2) = 3, f '(2) = -2, and g'(2) = 1. Find h'(2) for h(x) = g(x)/(1+f(x))

An open box with its base having a length twice its width is to be constructed with 600 square cm of material. Find its dimensions that maximize the volume.

Dealing with unknown constant within summation.

How do I find the derivative of 7x (lnx +ln7)-8x+e?

Graph Transformtions

how to take the derivative of a natural log function.

simplifying with radicals

non-linear function

how to take the derivative of a trig function if the trig function is the exponent

MAT1033 word problem

Finding derivatives of trig functions.

FindING the approximation of a sqroot

Tangent to line x+2y=4 whose center (3,3) find the equation?

If x(x+2)^6=f(x), find it so that f(x)>x

Using the chain rule to take the derivative at a given point

I do not understand how to solve this. Please help!

Factor using AC method

Given: l || m;< 1 = 20x + 5; <2 = 24x - 1

Please help me with this mixture problem and show work to help me better understand

using a table find the derivatives of a combined function. I keep getting it wrong.

I was given what the function and its derivative equal, so I have to use those values to find the derivative of a new function.

how to find really complex derivatives (please correct my thinking)

how do you factor this?

find y'(3) when y=7

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