The indefinite integral is an antiderivative . 不定积分是反导数。
2.
The graph of the antiderivative of the function is called the integral curve of 函数的原函数的图形称为的积分曲线。
3.
Theorem 2 if is continuous on the closed interval , then = is an antiderivative of on 如果函数在区间上连续,则函数=就是在上的一个原函数
4.
Definition 2 we shall often use the term indefinite integral in place of antiderivative , that is , the antiderivative of with any constant is called the indefinite integral of ( or ) in , denoted by 在区间上，函数的带有任意常数项的原函数称为（或）在区间上的不定积分，记作。
