Evaluate the sum using the given information.
-$$\mathrm { x } _ { 1 } = - 1 , \mathrm { x } _ { 2 } = 5 , \mathrm { x } _ { 3 } = - 5 , \mathrm { x } _ { 4 } = 4 , \text { and } \Delta \mathrm { x } = - 0.9 ; \mathrm { f } ( \mathrm { x } ) = 3 \mathrm { x } ^ { 2 } - \mathrm { x }$$
$\sum _ { i = 1 } ^ { 4 } f \left( x _ { i } \right) \Delta x$
A) $- 712.8$
B) $- 177.2$
C) $- 23.2056$
D) $- 178.2$

Question

Quizplus · Accepted Answer

The Answer of Evaluate the sum using the given information.
-$$\mathrm { x } _ { 1 } = - 1 , \mathrm { x } _ { 2 } = 5 , \mathrm { x } _ { 3 } = - 5 , \mathrm { x } _ { 4 } = 4 , \text { and } \Delta \mathrm { x } = - 0.9 ; \mathrm { f } ( \mathrm { x } ) = 3 \mathrm { x } ^ { 2 } - \mathrm { x }$$
$\sum _ { i = 1 } ^ { 4 } f \left( x _ { i } \right) \Delta x$
A) $- 712.8$
B) $- 177.2$
C) $- 23.2056$
D) $- 178.2$

Evaluate the Sum Using the Given Information ∑i=14f(xi)Δx\sum _ { i = 1 } ^ { 4 } f \left( x _ { i } \right) \Delta x∑i=14​f(xi​)Δx

Evaluate the Sum Using the Given Information $\sum _ { i = 1 } ^ { 4 } f \left( x _ { i } \right) \Delta x$