The indefinite integral is an antiderivative.不定积分是反导数.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....
A will needs the signature of the testator and two witnesses.一份遗嘱需要立遗嘱人和两个证人签字.A will needs the signature of the testator and two witness.一份遗嘱需要立遗嘱人和两个证人的签字.A will is revoked by the subsequent marriage of the testator.遗嘱...