(a) (Part 1) Consider the function f(x) = -0.3x2 +6 from x = 1 to r = 4. Use left-hand and right-hand sums with 6 divisions (n = 6) to approximate the area between the function and x-axis from x = 1 to x = 4. Draw an accurate graph to show each of these sums. (b) (Part 2) Use the Geogebra app: http://webspace. ship. edu/msrenault/geogebracalculus/ integration_riemann_sum. html to answer these questions. i. Use the app to find the value of sin(2x) - + 3 dr. Explain what this num- 3 ber represents. ii. Explain why sin(2x) - 10 + 3 dx is negative. iii. Show that sin(2x) - 10 +3) dr + sin(2x) - To + 3) dx = / (sin(2x) - to +3 dx