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    The question says:

    1+x/1-2x is approximately equal to 1+ax+bx^2. Find values of a and b.

    We only just started partial fractions today so I am assuming you have to use partial fractions to solve it, could anyone give me a hint to set me off?
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    (Original post by Davelittle)
    The question says:

    1+x/1-2x is approximately equal to 1+ax+bx^2. Find values of a and b.

    We only just started partial fractions today so I am assuming you have to use partial fractions to solve it, could anyone give me a hint to set me off?
    Is that \dfrac{1+x}{1-2x}

    If so this is a binomial expansion question
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    (Original post by Davelittle)
    The question says:

    1+x/1-2x is approximately equal to 1+ax+bx^2. Find values of a and b.

    We only just started partial fractions today so I am assuming you have to use partial fractions to solve it, could anyone give me a hint to set me off?
    Is that \frac{1+x}{1-2x} or 1+\frac{x}{1-2x}?

    Either way I'd be looking at the expansion of (1-2x)^{-1}
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    (Original post by TenOfThem)
    Is that \dfrac{1+x}{1-2x}

    If so this is a binomial expansion question

    (Original post by BabyMaths)
    Is that \frac{1+x}{1-2x} or 1+\frac{x}{1-2x}?

    Either way I'd be looking at the expansion of (1-2x)^{-1}
    Thanks to you both
 
 
 
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