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Yotta Paper 2 · Q1

Paper 2Logic & proof

Which of these statements is true?

A361\sqrt{361} is irrational
Bx2=x\sqrt{x^2}=x for all real xx
Cf(x)=3x2−x+5x1/2+1f(x)=3x^2-x+5x^{1/2}+1 is a polynomial function
D19513\frac{195}{13} is an integer
E2+2=52+2=5
Fln⁡(−1)=π\ln(-1)=\pi

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