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Anonymous users2024-02-088.Add left and subtract right y=3 x inverse function: y=log3x choose c
9.s abc = (1 2) bc sina = 32 3 sina = 16 3 sina = 1 2 angle a = 30° or 150°
(1+2i)(1-i)] [(1+i)(1-i)] = (3+i) 2 corresponds to coordinates of (3 2 ,1 2).
11.(sin ) =5 9 (cos ) = 1 - sin ) = 4 9 cos = - 2 3 because ( 2, )
So tan = sin cos = - 5 2 ,12Because cos = 3 5, 0< "So sin = 4 5 , so tan = 4 3
tan(α+/4)=[ tanα+tan(π/4)] / [ 1- tanα×tan(π/4)] =( tanα+1) / (1- tanα×1)=(7/3)/( -1/3) =-7
13.By deriving or plotting, the range is [ -4,0].
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Anonymous users2024-02-078 asks about the translation of exponential functions.
Question 9 is about solving areas using trigonometric functions.
10 asks about the rationalization of complex numbers.
11 asks about the equivalence transformation of trigonometric functions.
12 asks the same as 11.
Question 13 is about the interception of the image of the secondary function.
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Anonymous users2024-02-06The process of the last two questions is a bit long, so I won't stick the stickers, and you can communicate if necessary.
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Anonymous users2024-02-05In general, if you really can't do it, the answer is to write 1 and 0, and that's fine.
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Anonymous users2024-02-04You're well、It's because they don't! Haha
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