並前往https://books.google.com.tw/books?id=GSyzox8Lu9YC&pg=PA5&lpg=PA5&dq=exponential&source=bl&ots=1r5vCHlFu7&sig=ACfU3U1en-K5ohBYd5fKRmk-IlN5KGsB4Q&hl=zh-TW&sa=X&ved=2ahUKEwjrguux9pv0AhXHHLkGHaomAx0Q6AF6BAgtEAM