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secondary 4 | A Maths
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Answer is A=12, k=-6. Please help and thanks in advance
Date Posted: 6 months ago
Views: 154
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done
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hope this helps
Date Posted:
6 months ago
How was the 2 equations obtained? The one after inspection
By using inspection,
We have to collect the like terms.
In this case, we will sum the coefficient of e^kx first, giving A+2K.
After that, we will sum the other pair, the coefficient of xe^kx, giving AK+6A.
So, for that equation to equate to zero, the sum of the coefficients of e^kx and xe^kx have to be equal to zero.
We have to collect the like terms.
In this case, we will sum the coefficient of e^kx first, giving A+2K.
After that, we will sum the other pair, the coefficient of xe^kx, giving AK+6A.
So, for that equation to equate to zero, the sum of the coefficients of e^kx and xe^kx have to be equal to zero.
Sorry I still don't understand
What sum do you mean?
I get the separation into like terms, but I don't see why the coefficients sums have anything to do with 0.
Is there another example to illustrate
What sum do you mean?
I get the separation into like terms, but I don't see why the coefficients sums have anything to do with 0.
Is there another example to illustrate
done
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i hope this is clearer
Date Posted:
6 months ago
Thank you
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