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12_pdfsam_2

# 12_pdfsam_2 - >> z = 20*log10(y z =-10.1533 Example 2.6...

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Information about these functions is displayed by the command help function . For example: >> help sqrt SQRT Square root. SQRT(X) is the square root of the elements of X. Complex results are produced if X is not positive. See also SQRTM. Example 2.5 Use of math functions x = 2 2 y = 1 2 π e x 2 / 2 z = 20 log 10 y >> x = sqrt(2)/2 x = 0.7071 >> y = exp(-(x^2)/2)/sqrt(2*pi) y = 0.3107
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Unformatted text preview: >> z = 20*log10(y) z =-10.1533 Example 2.6 Solving for quadratic roots Problem: Solve for s: 2 s 2 + 10 s + 12 = 0 Analysis: Derive and apply the quadratic equation by ±rst expressing the quadratic polynomial in parametric form as 2 + bs + c = 0 Assuming a 6 = 0, rewrite the equation as s 2 + b a s + c a = 0 25...
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