一道大学英文数学题 find a formula for the inverse of f.f(x)=5 4x+7 f-1(x)=?

一道大学英文数学题 find a formula for the inverse of f.f(x)=5 4x+7 f-1(x)=? 问一道大学数学题 一道大学数学题. 一道大学的数学题 一道大学极限数学题 一道大学微积分数学题. 一道大学数学题 一道英文数学题,Let f be a real-valued function of real and positive argument such that f(x)+3xf(1/x)=2(x+1) for all real numbers x>0.Find f(2003). 一道求和数学题大学一道求和数学题 求教一道大学高等数学题! 一道大学微积分的数学题 请教一道英文数学题?题目如下:A rectangular box without a lid has volume 0.5 cubic metres. Find the minimum surface area. 计算一道英文数学题 关于velocity速度的At a time of t seconds, a particle moves a distance of s meters from its starting point, where s=5 sin(1.7 t)a) Find the average velocity (correct to four decimal places) between t=1 and t=1+h for th 一道英文数学题,看不懂啊,find the sum to n trems of the geometric series 108+60+33 1/3+...if k is the least number which exceeds this sum for all values of n,find k.find also the least value of n for which the sum exceeds 99% of k.thanks! 我这里有一道大学数学题,急 一道大学数学题,求大神解答~ 帮忙解一道大学数学题.看图... 一道简单的大学定积分数学题