Home | myLU x Lu HW: H12 Approximationg Area As X VA HW: H - C webassign.net/web/Student/Assignment-Responses/submit?dep=31500182&tags=autosave#question3804037_3 12. [-/0.33 Points] DETAILS SCALCET8 5.1.507.XP. The area A of the region S that lies under the graph of the continuous function is the limit of the sum of the areas of approximationg rectangles. n - co " A = lim R = lim [f(x )Ax + f(x2)Ax + . .. + f(x, )Ax] Use this definition to find an expression for the area under the graph of f as a limit. Do not evaluate the limit. f(x) = 9x cos(9x), 0 S x s it A = lim 1 = 1 Need Help? Watch It 13. [0/0.33 Points] DETAILS PREVIOUS ANSWERS SCALCET8 5.1.JIT.001. Write the sum using sigma notation. 2+ 4+6+ . . .+ 60 X K = 1 X Need Help? Watch It 14. [0/0.33 Points] DETAILS PREVIOUS ANSWERS SCALCET8 5.1.JIT.002. Write the sum using sigma notation. 12 + 22 + 32 + ... + 122 X Need Help? Watch It Submit