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1+1=2
Ngày mai là halloween rùi chúc bnn 1 ngày halloween vui vẻ và đầy man rợn khi trêu trọc người khác
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2. y = cot g(x2 + 2x)
Ta có: ( cot gu)' = - \(\frac{u^'}{sin^2u}\)
y' = - \(\frac{\left(x^2+2x\right)}{sin^2\left(x^2+2x\right)}=-\frac{2.\left(x+1\right)}{sin^2\left(x^2+2x\right)}\)
4. y = (1 + tgx)3
y = 3.(1 + tgx)2 (1 + 1gx)' (tgx)' = 1 + tg2x
= 3.(1 + tgx)2 (1 + tg2x) (un) = n.un-1 .u'
5. y = \(\sqrt{1+3cos^2x}\)
\(y=\frac{\left(1+3cos^2x\right)}{2.\sqrt{1+3cos^2}x}=\frac{-3.2.sĩn.cosx}{2.\sqrt{1+3cos^2}x}=\frac{-3sinx.cosx}{\sqrt{1+3cos^2}x}\)
2 chắc chắn 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
BẰng 3 nhưng bn k mik r nên thôi
1 + 1 + 1 = 3