can you please answer this wor

1. Use left-endpoint approximation with six subintervals to approximate thc arca under thc graph of f (x) from .T 1 to .T 4. Sketch thc graph and thc rectangles and use this to determine whether your estimate is an underestimate or an overestimate. 2. Express thc arca under thc graph of f (x) x sin(x) from .T 'k to .T 377 as a limit. 3. Use the definition of the definite integral and appropriate summation formulas 3 to evaluate (2m 1) dm. 1 4. Express thc following limit as a definite integral. 2 n 1 5. Use comparison property for definite integrals to prove that 6. Find thc average value of the given function over the specified interval. Use thc area interpretation to evaluate the corresponding definite integral. Ix II, [2, 2] 16 x2, [0, 4] 4