f(x)=0 also has itself as its derivative, but no one seems to care at all ☹️
her : i can change him him :
By the definition of derivative, we find that (a^x)' = (a^x)(a^h - 1)/h when h -> 0, Let e be the number so that (e^h - 1)/h = 1, e^h - 1 = h <=> e^h = 1 + h <=> e = (1+h)^(1/h) By definition, this is the only real number that, as the base of an exponential function, gives that function itself as a derivative
e^x is the goat of all functions
I hate my Calc 1 class rn but this video genuinely helped me. Thank you.
i remember my maths professor showed us this proof in intro calc, my mind was blown
NICE
It also has another interesting property. Although it's slope increases exponentially it's tangents intercept on y axis increases linearly with x i.e the intercept of tangent at x=1 is 0, at x=2 is 1, at x=3 is 2.... And so on
Thank you! This helps with comprehending calculus
In addition,the difinite integaral(the area below the curve) from negative infinity to any x value of that point is also exactly to its y-coordinates.
Another intereating method is using taylor's expansion series to prove that for all integer n since e^x=1+x+x^2/2+...x^n/n .then it's derivative would remain the same neglecting the rest since we're doing a derivative
The next step would be to show the area under the curve, which is the same value as the slope at any given point
So nice explanation.
Thank you,sir
Wow I’ll never forget this now 😮
Not by coincidence, but by definition
f(x)=0: Look at what they have to do to mimic a fraction of my power
Oh my God I so needed this
It is quite easy to understand once it's visualused like this, but personally I really like the other explanation of its consistency which involves Taylor series. You see, e^x can be expressed as an infinite sum of x^n/n! so it goes like this: 1+x + x²/2!... and so on.... So if you find a derivative of this you'll get the exact same thing, and I really love it
@sathmika