Question

导数一小题请举实例说明这个公式

Answer 1

e.g

S= f(t)=t

t0 =1

Δt =0.00001

f(t+t0) = 1.00001

f(t0) =1

ΔS/Δt =[ f(t+t0) - f(t0) ] /Δt

=(1.00001-1)/(0.00001)

=1