Day 5

*After completing trigonometry unit circle (downloadded sheet) by filling it and removing errors if you found any.Check why you made the errors.(Remember  sine is I and so cosine is _ (my hand signal) and relate their signs to quadrants .

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*Practice range  of square root functions and log functions

Limits at infinity  (x approaching infinity)

Tip:  In  rational expression only the highest power maaters for the rsult at infinity in numerator and denominator.See iff you can do the limits mentally using that idea as a short cut.after watching the videos.

Limits at infinity video1 (with graph);Limits at Infinty Video 2  ;  Limits at infinity video(square root example) Limits at infinity soving tricks Video  Asymptodes and limits

*Down load exercise on limits at infinity from P.Cal and check answers with the solutions

*Do the connected assignment (no answers)
Recollect

What can you recollect and say about (0-0),(0/0),0+0),(-0-0)?What can you say if you replace 0 by infinity in the question?How do you overcome the problem of powers of 'x' when x approaches + or - infinity.?Scribble you answer and keep it ready for a chat.

Exercise quick review of methods learnt.