How to write integrals in LateX (left justified, no limits)?

Question

I'm learning to use LaTeX at the moment for my math research, but I'm having difficulty with the integral symbol. Every time I use it, it puts it in the center of the page and it requires upper and lower limits. I've been using the commands

\[\int_a^b f(x) dx \]

and

\begin{equation}
\int_a^b f(x) dx
\end{equation}

both commands give me integrals with a and b as limits, placed in the center of the page. If I exclude a and b from the above commands, I get errors in my program. If it helps, I'm using a program called TeXworks to write my scripts.

i) How do you make the integral symbol with no upper and lower limits (ie the symbol for an indefinite integral/antiderivative)

ii) How can I left justify the integrals, moving them from the center of the page to the left margin.

PLEASE be specific in your answers, I'm not the best when it comes to computer programming.

Thanks in advance :D

Answer 1

i)

Just write \int f(x) dx

So :

\[\int f(x) dx \]

and

\begin{equation}

\int f(x) dx

\end{equation}



II)

you can add fleqn to document setting

for example : \documentclass[a4paper,10pt,fleqn]{article}

Answer 2

Integral Latex

Answer 3

Latex Integral