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In this guide, we address common errors in mathematics that often lead to confusion. For instance, the mistake of cancelling terms when x equals y can result in indeterminate forms. We also discuss the implications of applying mathematical rules incorrectly, especially for special cases like negative numbers and zero. Each problem is analyzed step-by-step, allowing learners to recognize and rectify these frequent pitfalls. Understanding these concepts is vital for mastering mathematics and avoiding frustration in problem-solving.
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WAH MATHS HO TO AISI COMMON ERRORS IN MATHEMATICS BY - RAMNATH
PROBLEM 1 Let x = y x2 = xy x2 - y2 = xy - y2 (x – y) (x + y)= y(x – y) x + y = y y + y = y 2y= y 2 = 1
HOWZZAAAAT 1 ??? WELL THE SOLUTION IS SIMPLE WE JUST CAN’T CANCELOUT THE TERMS X-Y ON BOTH SIDES AS IN STEP 4 BCOZ X-Y = 0 AS X =Y SO CANCELLING X-Y TERMS WE IMPLY 0/0 WHICH IS INDETERMINATE
PROBLEM 2 xm = xn m = n That is all we know, but as per above law… 10 = 11 = 12 = 13 = 14 = …= 1n 0=1=2=3=4=5=n (-1)0 = (-1)2 = (-1)4 = (-1)2n 0=2=4=6=8=10=2n
HOWZZAAAAT 2 ??? WELL THE SOLUTION IS SIMPLE WE JUST CAN’T APPLY THE RULE AS IT IS BCOZ THE ACTUAL RULE IS APPLICABLE IFF X IS NOT -1,1,0,i,-i
PROBLEM 3 1 1 -1 -1 = -1 -1 1 1 = -1 1 1 -1 = = -1 1
HOWZZAAAAT 3 ??? WELL THE SOLUTION IS SIMPLE WE JUST CAN’T TAKE THE SQ ROOT AS POSITIVE WE SHOULD ALSO CONSIDER THE –VE SQROOT