A few days ago
How do i find the inverse of y=x^3+x+1?
How do i find the inverse of y=x^3+x+1?
Top 1 Answers
A few days ago
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To do this, you basically solve for x, and then swap x and y.
I’m afraid it is very complicated, but it can be done. You’d have to solve this equation for y, using the cubic formula:
http://en.wikipedia.org/wiki/Cubic_formula
If this was assigned in your algebra class, you may want to ask your teacher for clarification or to double check the problem – you would not know how to do this.
If you’d like to solve it, it can be solved, but it turns out to be:
x = http://math.colgate.edu/~kellen/interspace/cubert.gif
Of course, you then generally switch x and y, but I’m not going to make a second picture with x’s instead of y’s.
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