If f(x+(1/x)) = x^2 + (1/x)^2
What is the value of f(x)?
A. x^2 + 1
B. x + (1/x)
C. x^2 - 2
D. x^2 + 2
E. x^2 + 2x
function concept
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For x = 1, f(1 + (1/1)) = 1^2 + (1/1)^2 ----> f(2) = 2pasami wrote:If f(x+(1/x)) = x^2 + (1/x)^2
What is the value of f(x)?
Hence, the correct option must give f(2) = 2.
Let us check them one by one,
- A. f(2) = 2^2 + 1 = 5 ----> NO
B. f(2) = 2 + 1/2 = 2.5 --> NO
C. f(2) = 2^2 - 2 = 2 ----> YES
D. f(2) = 2^2 + 2 = 6 ----> NO
E. f(2) = 2^2 + 2*2 = 8 --> NO
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- HSPA
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add 2 and substract 2 ..this can also do the trick. We can write 2 = 2 *x * (1/x) and we get (a+b)^2
First take: 640 (50M, 27V) - RC needs 300% improvement
Second take: coming soon..
Regards,
HSPA.
Second take: coming soon..
Regards,
HSPA.