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precalculus

How can I explain to a student the concepts
of shifting and stretching graphs
between

`h(x) = f(-2x)`

`g(x) = -2f(x)`

No answers available [Answer]
2005-08-02 Theresa (MLC Tutor) theresa@mathtoearth.org

precalculus

`y = frac{e^x + e^-x}{2}` solve for x?
`No answers available [Answer]` `2005-08-02`	`Joahnna (MLC Tutor) joahnna@mathtoearth.org`

precalculus

Problem gives roots and the degrees
of the function to be found.
Find the
function of the polynomial:

`x = 3 + 2i` degree 2

How come the second root
is `3 - 2i`?

No answers available [Answer]
2005-08-02 Joahnna (MLC Tutor) joahnna@mathtoearth.org

calculus

Volume of a cylinder is 22`oz^3` Cost to make the top
and bottom is twice as
much as cost to make the side.

Find the dimension to minimise the
cost?

`V_(cyl) = pir^2h`

No answers available [Answer]
2005-08-02 Joahnna (MLC Tutor) joahnna@mathtoearth.org