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 193
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Questions Asked

virtus:
Group Title
Find the volume of the solid formed when the area bound by the curve y=4x^2 and the x axis is rotated one complete revolution about the y a…
 updated 2 years ago
 20 replies
 1 Medal
Mathematics

virtus:
Group Title
Find the volume of the solid formed when the area bound by the curve y=4x^2 and the x axis is rotated one complete revolution about the y a…
 updated 2 years ago
 4 replies
 2 Medals
Mathematics

virtus:
Group Title
ray deposits $50 into a superannuation fund at the start of each month. The fund pays 15% interest which is compounded at the end of each mo…
 updated 2 years ago
 8 replies
 2 Medals
Mathematics

virtus:
Group Title
how to find the focus of y =(1/8)x^2 x +3
 updated 2 years ago
 6 replies
 5 Medals
Mathematics

virtus:
Group Title
a perpendicular line is drawn from focus F of the parabola x^2 =4ay to the point X on the tangent at P(2ap, ap^2). Find the locus of X
 updated 2 years ago
 35 replies
 1 Medal
Mathematics

virtus:
Group Title
find the equation of the locus of a point that moves so that its distance from the line 3x4y+9=0 is always 5
 updated 2 years ago
 16 replies
 3 Medals
Mathematics

virtus:
Group Title
find the equation of the locus of a point that moves so that it is always 5 units from (1,3). Describe the shape of this locus.
 updated 2 years ago
 10 replies
 2 Medals
Mathematics

virtus:
Group Title
perpendicular distance from point B(0,5) to the line x+3y5=0
 updated 2 years ago
 32 replies
 4 Medals
Mathematics

virtus:
Group Title
for a rate of change question, if your answer is negative it means that it is DECREASING right. So do you leave it as negative or change it…
 updated 2 years ago
 6 replies
 3 Medals
Mathematics

virtus:
Group Title
the mass in grams of a melting ice block is given by the formula M= 5(t^2) where t is the time in minutes. Show that the rate at which the …
 updated 2 years ago
 6 replies
 2 Medals
Mathematics

virtus:
Group Title
a sum of $20 000 is invested at 15% p.a. over 5 years. How much money is in the bank at the end of the 5 years if interest is paid monthly
 updated 2 years ago
 2 replies
 1 Medal
Mathematics

virtus:
Group Title
area between y=x^2 2x 3 and y =3x3
 updated 2 years ago
 18 replies
 3 Medals
Mathematics

virtus:
Group Title
differentiate 3 tan(4x(pi/4))
 updated 2 years ago
 2 replies
 No Medals Yet
Mathematics

virtus:
Group Title
A solid is formed by rotating the area between the curves u(x) and v(x) where 0 <x<ln2 , about the x axis.
Show that the volume of the sol…
 updated 2 years ago
 13 replies
 1 Medal
Mathematics

virtus:
Group Title
A solid is formed by rotating the area between the curves u(x)
and v(x) where 0 log 2 e £ x £ , about the x axis.
Show that the volume of …
 updated 2 years ago
 No Medals Yet
Mathematics

virtus:
Group Title
Show that f ¢(x) = exx(e+1) (x  e).
 updated 2 years ago
 No Medals Yet
Mathematics

virtus:
Group Title
integrate from 1 to 0 for 2/ (1+x^2) dx
 updated 2 years ago
 9 replies
 No Medals Yet
Mathematics

virtus:
Group Title
for the function y= 2+3sinx
find the amplitude and the max value
 updated 2 years ago
 9 replies
 1 Medal
Mathematics

virtus:
Group Title
find the asymptote for the function f(x)= (2^x) 3
 updated 2 years ago
 2 replies
 2 Medals
Mathematics

virtus:
Group Title
explain why the function f(x) = x^3 +2x4 only has a root
 updated 2 years ago
 7 replies
 No Medals Yet
Mathematics

virtus:
Group Title
why does ln9 x 0.5 = ln 3
…
 updated 2 years ago
 6 replies
 1 Medal
Mathematics

virtus:
Group Title
prove that every odd polynomial function is zero at x=0
…
 updated 2 years ago
 6 replies
 4 Medals
Mathematics

virtus:
Group Title
Consider the polynomial
P(x) = ax^5 +bx^4+cx^3+dx^2+ex+f
find the monic, even quartic that has y intercept 9 and a zero at x=3
 updated 2 years ago
 No Medals Yet
Mathematics

virtus:
Group Title
Find the cubic polynomial that has zeros 0,1 and 2, and in which the coefficient of x^3 is 2
 updated 2 years ago
 1 reply
 1 Medal
Mathematics

virtus:
Group Title
find the quadratic polynomial that has a minimum value of 3 when x=2 and passes through the point (1,6)
…
 updated 2 years ago
 2 replies
 1 Medal
Mathematics

virtus:
Group Title
find the monic quadratic polynomial that crosses the y axis at (0,6) and the x axis at (3,0)
 updated 2 years ago
 6 replies
 1 Medal
Mathematics

virtus:
Group Title
cosx root 3sinx =2
…
 updated 2 years ago
 7 replies
 1 Medal
Mathematics

virtus:
Group Title
What is the pH of a solution that contains 1.2 moles of nitric acid (HNO3) and 1.7 moles of hydrochloric acid (HCl) dissolved in 1000 liters…
 updated 2 years ago
 2 replies
 1 Medal
Mathematics

virtus:
Group Title
What is the pH of a solution that contains 1.2 moles of nitric acid (HNO3) and 1.7 moles of hydrochloric acid (HCl) dissolved in 1000 liter…
 updated 2 years ago
 1 reply
 1 Medal
Mathematics

virtus:
Group Title
cosx root3sinx =2
…
 updated 2 years ago
 9 replies
 7 Medals
Mathematics
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