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fiasKO [112]
3 years ago
11

Find the number b such that the line y = b divides the region bounded by the curves x = y^2 − 1 and the y-axis into 2 regions wi

th equal area. Give your answer correct to 3 decimal places.
Mathematics
1 answer:
max2010maxim [7]3 years ago
7 0
Hello,

We may exchange x and y.
-A_1= \int\limits^b_0 {x^2-1} \, dx = \dfrac{b^3}{3} -b\\
-A_2= \int\limits^1_b {x^2-1} \, dx =- \dfrac{2}{3} - \dfrac{b^3}{3}+b\\
-A_1=-A_2==\textgreater\ b^3-3b+1=0\\
sol={1.532088886238 ,  -1.879385241572 , 0.347296355334 }\\
The\  solution\  is\ 0.347296355334 .≈0.347



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