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algebra
| The student divided the polynomial`(x^2-5x+8)` by `(x-3)`
and wanted to know
how to check their answer `x-2+2/(x-3)`.
I showed them how to confirm their
answer by multiplying
the quotient by the divisor. I showed them how to get
from here
`(x-2+2/(x-3))(x-3)`
to here
`x^2-3x-2x+6+(2(x-3))/(x-3)`
to
here
`x^2-5x+6+2`
but the tutee had difficulty following and
understanding
this process. Is there a better way to explain how to
check
such a division?
|
No answers available [Answer]
2005-08-01
| Britta (MLC Tutor)
britta@mathtoearth.org |
| [ Edit ]
[ Delete ]
[ Answer ] |
| | [ Edit ]
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[ Answer ] |
precalculus
| A student came in with a list of topics that they needed
to study for an exam,
however they did not have any
specific problems that they wanted help with.
What is the
best way to address the students needs in a situation
like this?
|
1 answer available
2005-08-01
| Britta (MLC Tutor)
britta@mathtoearth.org |
| [ Edit ]
[ Delete ]
[ Answer ] |
calculus
| | The problem context: Find the derivative of y where `y=e^(xcosx)` The
section was introducing the use of u substitution to
get the problem down to a
chain rule situation. However
the use and reason for `dy/dx=dy/(du)*(du)/dx`
took a
while to explain, and I think it could have been
explained a little
better. What is a good way to explain
this?
|
No answers available [Answer]
2005-08-01
| Britta (MLC Tutor)
britta@mathtoearth.org |
| [ Edit ]
[ Delete ]
[ Answer ] |
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