Vectors and scalars

Two vectors have equal magnitude,and their scalar product is 这个matlab程序显示错误?Error using ==> conv A and B must be vectors. matlab如何解决?Error using ==> conv A and B must be vectors. matlab问题Vectors must be the same lengths. matlab运行遇到问题：Vectors must be the same lengths. matlab plot 提示错误：Vectors must be the same lengths! matlab中错误vectors must be the same lengths 是怎么回事? matlab的Vectors must be the same lengths.错误 matlab提示“Vectors must be the same lengths. 跪等!matlab中Vectors must be the same lengths pGEX vectors 中GST表达蛋白的分子量是多少? matlab总是显示Vectors must be the same lengths,请大师帮忙,