? d/dxf(x)=lim_(h->0)(f(x+h)-f(x))/h d d x f ( x ) = lim h 0 f ( x + h ) - f ( x ) h $$\frac{d}{d x} f ( x ) = \lim_{h \to 0} \frac{f ( x + h ) - f ( x )}{h}$$ ? \frac{d}{dx}f(x)=\lim_{h\to 0}\frac{f(x+h)-f(x)}{h} d d x f ( x ) = lim h 0 f ( x + h ) - f ( x ) h $$\frac{d}{d x} f ( x ) = \lim_{h \to 0} \frac{f ( x + h ) - f ( x )}{h}$$ ? int_0^1f(x)dx 0 1 f ( x ) d x $$\int_0^1 f ( x ) d x$$ ? int_0^(pi/2) sinx\ dx=1 0 π 2 sin x   d x = 1 $$\int_0^{\frac{\pi}{2}} \sin x \, d x = 1$$