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Grade 12Algebra

please tell me the besic concept utilized to calculate total number of real solutions of a given function for eg.The number of real solutions of, 1 + | ex – 1| = ex(ex- 2]

Profile image of Shantanu Sharma
12 Years agoGrade 12
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1 Answer

Profile image of Sher Mohammad
12 Years ago
1. the the way to find number of solution is sketching the curve of such function, and find out the number of intersection point.
2. by heat and trial, put some values of x , and try to see that if function satisfy or not.
3. put e^x=y
1+|y-1|=y(y-2)
for y>1
1+y-1=y^2-2y
y^2-3y=0, y=0 or y=3 , then put back e^x=3
for y<1
1+-y+1=y^2-2y
y^2-2y-2=0
solve above equation

sher mohammad
b.tech, iit delhi