limit x tends to zero (1-cosax/xsin2x)
maria9:
cosax?
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solve this by using expansion
expand sin and cosine
sine =
cancel the power of two and put x=0 we will get the answer
Lim = a^2 / 2
expand sin and cosine
sine =
cancel the power of two and put x=0 we will get the answer
Lim = a^2 / 2
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