Hmmm... Strange very very strange. The bars around the w represent absolute value, and whatever is inside those bars always yields a positive answer. So, |-87| = 87 or |-8| = 8 or even |5|=5
9. How many ways can 6 different items be arranged in a line and how many ways can 6 different items be arranged in a circle? 1
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Hmmm... Strange very very strange. The bars around the w represent absolute value, and whatever is inside those bars always yields a positive answer. So, |-87| = 87 or |-8| = 8 or even |5|=5
Let , so that differentiating both sides wrt
gives
If and
, the above reduces to
This is the slope of the tangent line, which has equation
