Double Angle Identities + Must Knows
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17 Terms
1
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cos 2x
cos²x - sin²x
2
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sin 2x
2sinx cosx
3
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cos 2x
2cos²x - 1
4
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cos 2x
1 - 2sin²x
5
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tan 2x
2tanx / 1 - tan²x
6
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tan²x + 1 = ?
sec²x
7
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1 + cot²x = ?
csc²x
8
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sin²x + cos²x = ?
1
9
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sin^-1x
siny = x
10
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d/dx(√x)
1
2√x
11
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d/dx(e³x)
3e³x
12
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d/dx(ex²)
2xe²
13
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d/dx(7x)
(ln7)(7x)
14
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d/dx(e²)
0
15
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d/dx[log3(x)]
1
(ln3)x
16
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d/dx[log(x)]
1
(ln10)x
17
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dy/dx(xx)
xx(lnx+1)