Define a Python function calculate investment(P,r,n,t) that calculatesand returns the final amount after t years (Rounded to 2 decimal points).

Here's the Python function to calculate investment:

def calculate_investment(P, r, n, t):
    """
    Calculates the final amount after t years with principal P, interest rate r, compounded n times per year.
    """
    A = P * (1 + (r/n))**(n*t)
    return round(A, 2)

The parameters are:
- P: principal amount
- r: annual interest rate (as a decimal)
- n: number of times the interest is compounded per year
- t: number of years

The formula used to calculate the final amount is:

A = P * (1 + (r/n))**(n*t)

This formula takes into account the principle amount, the annual interest rate, the number of times the interest is compounded per year, and the number of years. The `round()` function is used to round the final amount to two decimal points as specified in the problem.