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OpenStudy (jpsmarinho):
Lim (1- cosx)/x when x goes to 0 How to solve this without L'Hospital?
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OpenStudy (experimentx):
\[ 1 - \cos x = 2 \sin^2 (x/2) \] use the property that sin x/x = 1
OpenStudy (jpsmarinho):
I can substitute 1- cosx per something? I thinking in something related to the trigonometric identity to obtain sinx
OpenStudy (jpsmarinho):
Ah I multiply the num and denominator for the conjugate of the the numerator ^^. Thanks!!
OpenStudy (experimentx):
|dw:1343271605316:dw| 0x1 = 0
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