f(x+Δx)−f(x) | 4(x+Δx)2+9−4x2−9 | (2(x+Δx))2−(2x)2 | ||||
a) U(x,Δx) = | = | = | = | |||
Δx | Δx | Δx |
(2(x+Δx)−2x)(2(x+Δx)+2x) | 2Δx(4x+2Δx) | |||
= | = | = 8x+4Δx | ||
Δx | Δx |
dy | |
= f'(x) = limΔx→0(U(x,Δx)) = limΔx→0(8x+4Δx) = 8x | |
dx |
5^2 | 52 |
2^{10} | 210 |
a_2 | a2 |
a_{25} | a25 |
p{2} | √2 |
p{81} | √81 |
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