Find a and b so that the rational function f(x) = (ax^4 + bx^3 + 3) / (x^3 - 2) has an oblique asymptote given by y = 2x - 3
Performing polynomial divsion...we have....
ax + b
x^3 - 2 [ ax^4 + bx^3 + 0x + 3 ]
ax^4 -2ax
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bx^3 + 2ax + 3
bx^3 -2b
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2ax + (3 + 2b)
We need to have ax + b = 2x - 3
So
ax + b = 2x - 3
a =2 b = -3