limx->90' (x-90')^2secx=??
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Originally Posted by Joyce limx->90' (x-90')^2secx=?? Is that meant to be 90 degrees? The first thing to do is rewrite this in radians: Then if we must use L'Hopital's rule: RonL
Originally Posted by Joyce limx->90' (x-90')^2secx=?? Do you know L'Hopital's rule? to use it, we must have the condition that the limit goes to or so, rewrite as Now apply L'Hopital's
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