Find the height of y=((sqrtx)(3-x))/3 for 0<=x<=3

Use the arc length formula and note that
1/4x+1/2+x/4=(1/(2sqrtx) + sqrtx/x)^2
is a perfect suare.

Not sure what you want in the first problem. The height varies along the interval.

For the second problem, your equation is wrong. Both terms on the right have x in the denominator. There is no way to get the x/4 term on the left.

And, find the arc length of what?

To find the height of the curve y = ((sqrt(x)(3-x))/3) for the given range of x, we can use the arc length formula and then solve the resulting equation for the height.

The arc length formula is given by:

L = ∫[a to b] sqrt[1 + (dy/dx)^2] dx

In this case, we need to find the arc length between x = 0 and x = 3. Let's differentiate y with respect to x to get dy/dx:

dy/dx = (1/2) * (sqrt(x) - (x * sqrt(x)) / (3 * sqrt(x)))

Now we can substitute this value of dy/dx back into the arc length formula:

L = ∫[0 to 3] sqrt[1 + ((1/2) * (sqrt(x) - (x * sqrt(x)) / (3 * sqrt(x))))^2] dx

Simplifying this equation gives:

L = ∫[0 to 3] sqrt[1 + (1/4) * (x - (x^2/3))] dx
L = ∫[0 to 3] sqrt[(4 + x - (x^2/3)) / 4] dx

To continue solving this integral, you can use integration techniques such as substitution or partial fractions.

However, your question mentions a certain equation:

1/4x + 1/2 + x/4 = (1/(2sqrt(x)) + sqrt(x)/x)^2

If we can obtain this equation, we might be able to simplify the arc length integral further.

Pending clarification on the equation you provided, we can calculate the arc length and find the height of the curve using the arc length formula.