04/29/18

How do u calculate the value of W ??
How to find the w value in this matrix equation ??   w    -9 4  w-12   " Determinant is equal to 0 "  
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04/28/18

Find the domain of the logarithmic function. f(x) = log(x+5/x-2)
Show all steps. The equation is f(x)=log (x+5 over x-2)
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04/28/18

Show that the vector w = −i − 4 j + 7 k is coplanar with the vectors u = 2 i + 3 j − k and v = 4 i + j + 11 k.
Find a vector which is coplanar with these three vectors and is perpendicular to w     I understand the first part, don't know how to do the second
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04/28/18

solve for x: (x/2x+6)-(1/x+3)=1
need step by step so I can learn to do it myself. Thanks
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04/28/18

I am after the formula for the inverse function f-1(t)
The original function is f(t) = V = 2+48/(1+e-(t-20)³/1000) I have plotted this original and for 0>=t>=40 and get a upward snaking line. For every inverse I derive I get a completely... more
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04/27/18

The fredricks
The fredricks are going to put wall paper on one of the walls in their bedrooms. Their bedroom wall is 12 m wide and 3m high. Each roll of wall paper is 6m long and 75 cm wide. How many rolls of... more
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04/27/18

Let A(1,3), B (-2,-4) and C(1,-2) be a triangle. Find the equation of the perpendiculars from the vertices to the opposite sides
Pls someone should help me out
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04/27/18

AP Calculus: Range of a Function
Find the range of the function F(x) = Int[-4,x] √(16-t^2)dt
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04/27/18

Let u and v be vectors such that u = -3i + 2j and v = ai + 5j
Let u and v be vectors such that u = -3i + 2j and v = ai + 5j, where a ∈ R.  a. Find all values of a for which u and v are perpendicular. 
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04/27/18

Functions Defined by Integrals
Let F(x) = Int[0,2x] tan(t^2)dt. Use your calculator to find F"(1).
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04/27/18

maximum area?
a stonemason has enough stones to enclose a rectangular patio with 60ft of stone wall. If the house forms one side of the rectangle, what should the dimensions of the patio in order to yield the... more
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04/27/18

for f(x)=x+5 and g(x)=3x+1, find the domain of (f/g)(x)
for f(x)=x+5 and g(x)=3x+1, find the domain of (f/g)(x)
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04/27/18

The equation m^2x^2 - (m+n)x + n =0 has two equal real roots.show that n^2 + 2(m-2m^2)n + m^2 = 0. If n is real, find the range of values of m
Please help me in this question 
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04/27/18

H=10+3cos6t-sin9t-3sin3t show h can be rewritten as h= 13+4sin^3 t-6sin^2 3t-6sin3t
Please show the trigonometic identities and working
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04/27/18

The curve y=(k-6)x^2 - 8x + k cuts the x axis at two points and has a minimum point. Find the range of k. [Answer: 6<k<8]
Pls help me with the working
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04/24/18

Find the particular antiderivative that satisfies the following conditions:
R′(x)=2−0.5x;R(0)=1
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04/24/18

Exponential function from two points.
 Write an exponential equation in y = ab^x form. Points are (0, 0.2) and (1, 1.6). Please help!
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04/23/18

Solve Sec(x)=-8.8775. I have already drawn the graph and recieved answer number one, but how do I get the second answer?
The scale is 0 less than or equal to x less than 2pi. I found the first answer to be 1.684, but I am told to subtract 2pi from this answer to get the second one. Why do I do this? Why can't I just... more
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04/23/18

Let f(x) = (x − 3)^−2. Find all values of c in (1, 7) such that f(7) − f(1) = f '(c)(7 − 1).
Could someone please solve for c? I have solved it and I get c is equal to 7 but apparently it is wrong.    Thank you
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04/22/18

college question
a rectangular lot whose perimeter is 250 ft is fenced along three sides. an expensive fencing along the lot's length costs 30 dollars per foot. An inexpensive fencing along the two side widths... more
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04/22/18

Use known Taylor Series to find the value for...
Use known Taylor Series to find the value for:  (π is Pi character) π/3 - π/3^3 * 3!  + π/3^5 * 5!  - π/3^7 * 7! + ......
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04/22/18

Find a power series for f(x)=xe^x
a.)Find a power series for f(x)=xe^x   b.) Using the Taylor Series you found in part a, approximate 2e^2 using the first five terms, rounding to two decimal places.    
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04/22/18

Find a quadratic polynomial the sum and product of whose zeroes are √2 and-3/2 respectively
Find a quadratic polynomial 
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04/21/18

find a quadratic model for the set of values: (-2,-20), (0,-4), (4,-20)
find a quadratic model for the set of values: (-2,-20), (0,-4), (4,-20)    
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04/21/18

the number of rabbits
The number of rabbits vary inversely as the number of foxes and directly as the number of cabbages.  When there were 120 rabbits, there were 15 foxes and 300 cabbages. How many cabbages were there... more
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