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Mathematics: Post your doubts here!

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4 (i) 12 ( -2 ) ³ + 25 ( -2 ) ² -4 ( -2 ) - 12 = 0
-96 + 100 + 8 - 12 = 0
108 - 108 = 0
Thus we have shown that f(-2) = 0

Second part I have no idea how to solve ^_^! But the closest answer I got is -0.368!
 
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In part i after calculating values at f(1) and f(2) how are we supposed to give a statement supporting our change of signs? And in iii how will we calculate x1?
 

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  • cie_9709_03_june09.dvi - 9709_s09_qp_3.pdf 2012-08-26 02-25-41.jpeg
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nightrider1993. This is incredible. Thanks mate.
Can you tell me where can i obtain some good illustrated examples of integration of functions whereby you have to use ln of denominator and doing multiplications accordingly?
 
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Could someone help me to simplify this sum?

(2x^2 y^-1)^-1/4
____________
(8x^-1 y^2)^-1/2
 
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Could someone help me to simplify this sum?

(2x^2 y^-1)^-1/4
____________
(8x^-1 y^2)^-1/2

The simplified answer for this one would be

x^3/ 8y^3---(x cube upon 8 y cube for better understanding :) )
If you want the method then just tell me I will attach a scan....take care...:)
 
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The simplified answer for this one would be

x^3/ 8y^3---(x cube upon 8 y cube for better understanding :) )
If you want the method then just tell me I will attach a scan....take care...:)
Yes, pls..?

and also let me know if I m wrong???please thank you...

The book states the answer is 2^5/4 x^-1 y^5/4 .. but I dunno how to reach at this answer..
 
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