展开 In(x+sqrt(1+x^2))

解答

展开

I n (x + 1 + x^{2})

n I x + n I 1 + x^{2}

求解步骤

I n (x + 1 + x^{2})

= n I (x + 1 + x^{2})

使用分配律:

a (b + c) = ab + a c

n I (x + 1 + x^{2}) = n I x + n I 1 + x^{2}

= n I x + n I 1 + x^{2}

e x p an d (5 x y + 2 y + 5) d x + 2 x d y

e x p an d (3 + e^{- 2 t})^{2}

e x p an d \frac{8 x - 42}{( x ^{2} + 1 ) ^{2}}

e x p an d \frac{5 ( x + 6 ) ( 6 x - 1 )}{( 2 - x ) ( 2 x + 2 )}

e x p an d r ((x, y) + (a, b))