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解答：
diff(E)
解答：
n = Symbol('n')
x = Symbol('x')
diff(x**n,x)
解答：
a = Symbol('a')
x = Symbol('x')
diff(a**x,x)
解答：
a = Symbol('a')
x = Symbol('x')
diff(log(x,a),x)
解答：
x = Symbol('x')
diff(asin(x))
解答：
x = Symbol('x')
n = Symbol('n')
diff(log(1+x),x,n)偏导
解答：
x,y = symbols('x y')
idiff(exp(y)+x*y-exp(1),y,x)
解答：
idiff(x-y+1/2*sin(y),y,x,2)
