We know that (xy) 3 can be written as (xy)(xy)(xy) We know that (xy)(xy) can be multiplied and written as x 2xy yx y 2 (xy) = x 22xy y 2 (xy...
√ sec^2x tan^2x identity 294777-Is sec^2x-tan^2x=1 an identity
In mathematics, an "identity" is an equation which is always true These can be "trivially" true, like " x = x "...
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