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https://www.quora.com/Find-the-domain-and-range-of-the-real-valued-function-f-x-frac-1-+-tan-x-1-tan-x
to lớn find the domain, think about when f(x) would not be defined. There are two such cases. First, if tan(x) is not defined, then f(x) would not be defined. Since tax(x) = sin(x) / cos(x) then tax(x) is ...
I'm going lớn guess what you mean by simplify và say that this expression simplifies down todisplaystyle anleft(2x ight) .Explanation:(I am assuming that this problem is about ...
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Where you have left of using cos(90^circ-x)=sin x,sin(90^circ-x)=cos x frac2cos50^circ - sin40^circ2sin50^circ + cos40^circ=frac2sin40^circ- sin40^circ2cos40^circ + cos40^circ=?
Alan p. Apr 22, 2015 The Half-angle formula fordisplaystyle anis displaystyle anleft(fracx2 ight)=fracsinleft(x ight)1+cosleft(x ight) ...
chú ý that an(x)^2 ge 0 & f(x)= frac1-3 an(x)^23- an(x)^2 = 3+frac8 an(x)^2-3. Clearly, for an(x)^2 > 3, frac8 an(x)^2-3 > 0, và f(x) >3. For 0 le an(x)^2
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left< eginarray l l 2 & 3 \ 5 & 4 endarray ight> left< eginarray l l l 2 và 0 và 3 \ -1 & 1 và 5 endarray ight>
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