Question

Matlab编写方程式

h=1.5b t=0.005 要求下面的式子等于9744/160000000, 要求取其实数解, 自己编了几次都有问题,求解答

Answer 1

b=solve('1.5^2*b*b^2/6-(b-2*0.005)*(1.5*b-2*0.005)^3/6/1.5/b=9744/160000000','b')

b =

.78979850291756959710384394832687e-1
-.18430487978484710980936135662933e-4
-.67850308692667363888292347585915e-1
-3000000000000000000000000000000.0

Answer 2

syms b
h=1.5*b;
t=.005
b*h.^2/6-(b-2*t)*(h-2*t)^3/(6*h)

ans =

(3*b^3)/8 - (((3*b)/2 - 1/100)^3*(b - 1/100))/(9*b)